The Most Misunderstood Concept in Physics

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  • Опубликовано: 1 май 2024
  • One of the most important, yet least understood, concepts in all of physics. Head to brilliant.org/veritasium to start your free 30-day trial, and the first 200 people get 20% off an annual premium subscription.
    If you're looking for a molecular modeling kit, try Snatoms - a kit I invented where the atoms snap together magnetically: snatoms.com
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    A huge thank you to those who helped us understand different aspects of this complicated topic - Dr. Ashmeet Singh, Supriya Krishnamurthy, Dr. Jos Thijssen, Dr. Bijoy Bera, Dr. Timon Idema, Álvaro Bermejillo Seco and Dr. Misha Titov.
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    References:
    Carnot, S. (1824). Reflections on the motive power of heat: and on machines fitted to develop that power. - ve42.co/Carnot1890
    Harnessing The True Power Of Atoms | Order And Disorder Documentaries, Spark via RUclips - ve42.co/OrderDisorder
    A better description of entropy, Steve Mould via RUclips - ve42.co/Mould2016
    Dugdale, J. S. (1996). Entropy and its physical meaning. CRC Press. - ve42.co/Dugdale1996
    Schroeder, D. V. (1999). An introduction to thermal physics. - ve42.co/Schroeder2021
    Fowler, M. Heat Engines: the Carnot Cycle, University of Virginia. - ve42.co/Fowler2023
    Chandler, D.L. (2010). Explained: The Carnot Limit, MIT News - ve42.co/Chandler2010
    Entropy, Wikipedia - ve42.co/EntropyWiki
    Clausius, R. (1867). The mechanical theory of heat. Van Voorst. - ve42.co/Clausius1867
    What is entropy? TED-Ed via RUclips - ve42.co/Phillips2017
    Thijssen, J. (2018) Lecture Notes Statistical Physics, TU Delft.
    Schneider, E. D., & Kay, J. J. (1994). Life as a manifestation of the second law of thermodynamics. Mathematical and computer modelling, 19(6-8), 25-48. - ve42.co/Schneider1994
    Lineweaver, C. H., & Egan, C. A. (2008). Life, gravity and the second law of thermodynamics. Physics of Life Reviews, 5(4), 225-242. - ve42.co/Lineweaver2008
    Michaelian, K. (2012). HESS Opinions" Biological catalysis of the hydrological cycle: life's thermodynamic function". Hydrology and Earth System Sciences, 16(8), 2629-2645. - ve42.co/Michaelian2012
    England, J. L. (2013). Statistical physics of self-replication. The Journal of chemical physics, 139(12), 09B623_1. - ve42.co/England2013
    England, J. L. (2015). Dissipative adaptation in driven self-assembly. Nature nanotechnology, 10(11), 919-923. - ve42.co/England2015
    Wolchover, N. (2014). A New Physics Theory of Life, Quantamagazine - ve42.co/Wolchover2014
    Lineweaver, C. H. (2013). The entropy of the universe and the maximum entropy production principle. In Beyond the Second Law: Entropy Production and Non-equilibrium Systems (pp. 415-427). Berlin, Heidelberg: Springer Berlin Heidelberg. - ve42.co/LineweaverEntropy
    Bekenstein, J.D. (1972). Black holes and the second law. Lett. Nuovo Cimento 4, 737-740. - ve42.co/Bekenstein1972
    Carroll, S.M. (2022). The Biggest Ideas in the Universe: Space, Time, and Motion. Penguin Publishing Group. - ve42.co/Carroll2022
    Black hole thermodynamics, Wikipedia - ve42.co/BlackHoleTD
    Cosmology and the arrow of time: Sean Carroll at TEDxCaltech, TEDx Talks via RUclips - ve42.co/CarrollTEDx
    Carroll, S. M. (2008). The cosmic origins of time’s arrow. Scientific American, 298(6), 48-57. - ve42.co/Carroll2008
    The Passage of Time and the Meaning of Life | Sean Carroll (Talk + Q&A), Long Now Foundation via RUclips - ve42.co/CarrollLNF
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    Special thanks to our Patreon supporters:
    Emil Abu Milad, Tj Steyn, meg noah, Bernard McGee, KeyWestr, Amadeo Bee, TTST, Balkrishna Heroor, John H. Austin, Jr., john kiehl, Anton Ragin, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Juan Benet, Ubiquity Ventures, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Sam Lutfi.
    ▀▀▀
    Written by Casper Mebius, Derek Muller & Petr Lebedev
    Edited by Trenton Oliver & Jamie MacLeod
    Animated by Mike Radjabov, Ivy Tello, Fabio Albertelli and Jakub Misiek
    Filmed by Derek Muller, Albert Leung & Raquel Nuno
    Molecular collisions video by CSIRO's Data61 via RUclips: Simulation of air
    Additional video/photos supplied by Getty Images, Pond5 and by courtesy of NASA, NASA's Goddard Space Flight Center, NASA Goddard Flight Lab/ CI Lab, NASA/SDO and the AIA, EVE, HMI, and WMAP science teams. As well as the Advanced Visualization Laboratory at the National Center for Supercomputing Applications, B. Robertson, L. Hernquist
    Music from Epidemic Sound & Jonny Hyman
    Produced by Derek Muller, Petr Lebedev, Emily Zhang, & Casper Mebius

Комментарии • 19 тыс.

  • @ketchup2707
    @ketchup2707 10 месяцев назад +24521

    For those of you that haven’t taken a thermodynamics course yet, I don’t think you realize how incredibly helpful this video is lol

    • @tusharkuntawar6170
      @tusharkuntawar6170 10 месяцев назад +184

      I feel ya

    • @thegamesforreal1673
      @thegamesforreal1673 10 месяцев назад +665

      For real, I wish I'd had this video like 5-6 years ago during my bachelors!

    • @tillthiemann6448
      @tillthiemann6448 10 месяцев назад +48

      @@thegamesforreal1673 same

    • @zaphodbeeblebrox8382
      @zaphodbeeblebrox8382 10 месяцев назад +354

      Definitely. I highly recommend this video to any chemical or mechanical engineer.

    • @chenmatt4467
      @chenmatt4467 10 месяцев назад +18

      For real

  • @TimeBucks
    @TimeBucks 10 месяцев назад +2349

    This has to be one of the best Veritasium episodes.

    • @BHUBANSINHA
      @BHUBANSINHA 10 месяцев назад +3

      Good

    • @vast634
      @vast634 10 месяцев назад +1

      I think he got the idea to make a video about Entropy from the recent video by Sabine Hossenfelder, who covered the same topic.

    • @tariqtech5078
      @tariqtech5078 10 месяцев назад +10

      Nope. I disagree on one part. Life support conversion from low entropy to high entropy???? This is where Derek is MISTAKEN. I bet he, like many other atheists, is a core believer in Evolution (humans coming from apes, etc). While I like many of his videos, he tends to be biased towards atheism. Even in Science, religion plays a huge role. Just training one AI neural network model for computer vision requires extensive amount of computation and energy. Not to mention all the data that needed to be extract and transformed. Statistically speaking, odds are absolutely 0% chance that Humans came into existence based on such theories. If I brought you a digital camera and told him I just found it on planet Y and claimed no one made it, scientists will start laughing. Plus, why did it have to be a biological life on Earth??? why not some sort of mechanical/electrical form of life????? TALK ABOUT HYPOCRISY AT ITS FINEST!!!!!!!

    • @cheesebusiness
      @cheesebusiness 10 месяцев назад +4

      You just advertise yourself

    • @tariqtech5078
      @tariqtech5078 10 месяцев назад +2

      @@cheesebusiness Well show me Einstein where the flaw of my logic is 🧐

  • @0biwan7
    @0biwan7 Месяц назад +543

    the three laws of thermodynamics:
    1. you can't win
    2. you can't break even
    3. you can't stop playing the game

    • @thesunnyroad
      @thesunnyroad 22 дня назад

      A black hole entered the chat 😅

    • @PlanetHertz
      @PlanetHertz 18 дней назад +10

      @@Blackpeopleslayer Username???

    • @Blackpeopleslayer
      @Blackpeopleslayer 17 дней назад +7

      @@PlanetHertz is it bad🥺??

    • @PlanetHertz
      @PlanetHertz 17 дней назад +5

      @@Blackpeopleslayer its so lovely, I don't think nothing can compare. A rose? 🌹

    • @alfredlear4141
      @alfredlear4141 17 дней назад +8

      Only if you're in an enclosed environment ...

  • @timallen6025
    @timallen6025 27 дней назад +159

    My brain hurts . But in an expansive way

    • @johnleandrepermison7175
      @johnleandrepermison7175 9 дней назад

      Me too dudes… That headache is actually diff. to a normal headache… It hits different hahahaha

    • @jeff_forsythe
      @jeff_forsythe 6 дней назад

      in most cases, pain is healing, not to be feared.

    • @THE_ONE_WHO_ASKED1
      @THE_ONE_WHO_ASKED1 4 дня назад

      You probably don't know thermodynamics

    • @jeff_forsythe
      @jeff_forsythe 4 дня назад

      @@THE_ONE_WHO_ASKED1 I know God, does that count?

    • @THE_ONE_WHO_ASKED1
      @THE_ONE_WHO_ASKED1 4 дня назад

      @@jeff_forsythe tf does that mean?

  • @Nighthawkinlight
    @Nighthawkinlight 10 месяцев назад +10031

    I told my brother that if he applied to be one of your physics writers that he should tell you that I miss your street interview videos. Looks like you already had my wish on your radar!

    • @TechSquidTV
      @TechSquidTV 10 месяцев назад +126

      I really miss those too

    • @cuthbertallgood7781
      @cuthbertallgood7781 10 месяцев назад +286

      No offense to anyone who likes them, but I was actually thinking that they're just a waste of time. Like, I'm curious what Veritasium has to say on the subject, so what's interesting about what random people think about it? They don't really contribute anything to the video.

    • @beatbox9794
      @beatbox9794 10 месяцев назад +11

      ​@@cuthbertallgood7781hm.

    • @henil0604
      @henil0604 10 месяцев назад +686

      @@cuthbertallgood7781 those short public interviews arises common misconception in viewer's mind, which is extremely important when it comes to learning via media.

    • @TechSquidTV
      @TechSquidTV 10 месяцев назад +176

      @@cuthbertallgood7781 no that's fair, but I do like seeing what "normal" people think. It's a good refresher into what the average person believes or thinks.

  • @SupratimBhowmick
    @SupratimBhowmick 9 месяцев назад +1337

    I was a student of physics. Today at the age of 57 I understood what entropy actually means. Thank you.

    • @itzz
      @itzz 9 месяцев назад

      Indian education system which is destroying all young youths😢

    • @elrohifilmon2291
      @elrohifilmon2291 9 месяцев назад +2

      Why did we integrate the work done by the piston and on the piston ( 6:54 ) . Is it applying the second law of thermodynamics(entrophy) meaning which formula? Correct me if I'm wrong. I'm just curious!

    • @astro18965
      @astro18965 9 месяцев назад +8

      @@elrohifilmon2291 It is using the formula for work= force x displacement since the amount of work done on the piston is almost equal to the amount of heat produced due to work being high-grade energy.

    • @elrohifilmon2291
      @elrohifilmon2291 9 месяцев назад +4

      @@astro18965 Okay thank you for your explanation It really helped!!! I think i should go look into my advanced physics studies I'm lingering in the past in grade 9 -10 physics , tho i really hate the idea of integration, just the concept behind definite integrals, area, volume etc.... Overall thank you very much.

    • @Toni_560
      @Toni_560 9 месяцев назад +6

      You were a student but it seems your failed to pass. It's fundamentally taught, wtf.

  • @geneballay9590
    @geneballay9590 Месяц назад +95

    What a fantastic, informative and interesting video. My PhD in theoretical physics dates to 1976 and this video has to be one of the most thought-provoking discussions on entropy that I have ever seen or read. Thank you for sharing.

    • @gravityfreaksmusic
      @gravityfreaksmusic 16 дней назад

      Lemme piggyback on this, sans the PhD. 😂 The video gives me a pointer towards getting a grip on a subject that was very foreign until now. Thank you!

    • @jeff_forsythe
      @jeff_forsythe 6 дней назад

      It is karma that keeps us on the ground, not gravity, but who cares about wisdom these days................................Falun Dafa

  • @serenarose54
    @serenarose54 Месяц назад +129

    15:47 to 16:27 . That has to be one of the best cinematography I've ever seen. The narration, the visuals and the background music especially. Best build up to reveal the Star of the talk (quite literally)

    • @KTRYT_
      @KTRYT_ 29 дней назад +7

      so true i am in my last year of highschool and understood entropy for the first time and it felt like an movie

    • @zanejawad3017
      @zanejawad3017 23 дня назад +1

      If you thought the cinematography was really good here I'd watch Interstellar if you haven't already, easily the best depiction of the universe I have ever seen

    • @maximegorsse6627
      @maximegorsse6627 10 дней назад

      I watched this video like 20 times now and it still gives me goosebumps every times

  • @SteveMould
    @SteveMould 10 месяцев назад +20309

    The thing about one photon from the sun turning into several spreading out in all directions answered a long standing question for me - how to explain the way the sun “powers” life on earth in terms of entropy. Thanks!

    • @iseriver3982
      @iseriver3982 10 месяцев назад +203

      No one taught you about photosynthesis?

    • @TheDestineyAngel
      @TheDestineyAngel 10 месяцев назад +447

      If watching a Veritasium video leads to me watching a SteveMould video with black holes instead of another Veritasium video with black holes; could that be considered a Spool Paradox or another example of a big photon converting into many small photons?
      Jokes aside, I love your videos and I lm glad you left a comment.

    • @wantstocomment7092
      @wantstocomment7092 10 месяцев назад +40

      It's just life radiation bro.

    • @garrysekelli6776
      @garrysekelli6776 10 месяцев назад +58

      One photon cannot turn into several photons. İmo.

    • @NikhilPratapSinghBHP
      @NikhilPratapSinghBHP 10 месяцев назад +262

      ​@@garrysekelli6776why not? If a high energy photon is absorbed, cant it can be later emitted in different levels? In a way that all the photons' energy when aaded up will be equal to the original high energy photon

  • @lilmisslizzyc
    @lilmisslizzyc 7 месяцев назад +1472

    When I was like 9 or 10, I had this little series of books that basically explained different science concepts in a kid-friendly way and after reading the physics one, I kept telling my mom my room was always messy because of entropy 😭😭
    edit: for anyone interested in the books, they’re from the Basher Science series!

    • @whoreslayer
      @whoreslayer 8 месяцев назад +72

      that's cute

    • @VeeHaron
      @VeeHaron 8 месяцев назад

      I know right🥲@@whoreslayer

    • @wildhunt2463
      @wildhunt2463 8 месяцев назад +62

      haha, I tried this but got beaten up

    • @paliyander
      @paliyander 8 месяцев назад +13

      i always said it was a creative mess xD

    • @Phymacss
      @Phymacss 8 месяцев назад +8

      By any chance, do you still have the names of the books? I would be interested in reading them.

  • @chrismuratore4451
    @chrismuratore4451 Месяц назад +159

    The feeling of realizing the idea before its actually clarified, only to be validated a few moments later is irreplaceable.
    It amazes me that this kind of information doesn't give everyone the goosebumps.

    • @guywilson3828
      @guywilson3828 27 дней назад +8

      i was hypothesizing entropy last night during a talk with my mom and i didn't even know what entropy was. just a good ol conversation about energy. made this video extra incredible.

    • @findzy4419
      @findzy4419 23 дня назад +4

      yeah dude mental, did this with the big bang theory and thought I was a genius at 21 hahah, then i googled the next day. I'm now 34, never forget the night i figured out the universe based on a simple thought process of - everything is round

    • @tomasratislav9306
      @tomasratislav9306 18 дней назад

      it does

  • @travisripwell3339
    @travisripwell3339 2 месяца назад +184

    I don’t usually comment on RUclips videos, actually I don’t leave comments at all, but this series is probably the best thing out right now. Thank you for empowering and inspiring me with this fantastic channel.

    • @coolkid7151
      @coolkid7151 Месяц назад +9

      No one cares that you don’t leave comments just say what you’re gonna say

    • @Peter-vq1iv
      @Peter-vq1iv Месяц назад

      I dont usually comment also, stil this guy shows that he is more showman than scientist. 24:31 "More than 10 to the 100 years from now," you can surly say more than from next satuday to next monday. :/ if he is PHD Scientist, should realy know scale of time he talks about.

    • @Peter-vq1iv
      @Peter-vq1iv Месяц назад

      @@coolkid7151 I care that he dont leave, no you go cry to your moma.

    • @snoisnemidenin
      @snoisnemidenin Месяц назад +2

      ⁠​⁠​⁠@@Peter-vq1iv”10 to the 100 years” isn’t the same as “next Saturday to next Monday”. It’s not even a range, it’s a specific number… 10^100 years.

    • @hisham5702
      @hisham5702 26 дней назад

      @@Peter-vq1iv Maybe don't jump to conclusions, he said 100 as the power of 10 not 10-100 years.

  • @zsmith200
    @zsmith200 10 месяцев назад +566

    I did my PhD in biophysics and I love that you mentioned life when talking about entropy. This always confuses people until they realize you’re not a closed system

    • @wwlittlejOfficial
      @wwlittlejOfficial 10 месяцев назад +30

      Im no student, just a hobbyist interested in all things science, but damn the whole shine a light on random atoms and getting life was mind-blowing for me. THIS is the argument I wish more OoL scientists explained. Abiogenisis in a quote.

    • @bomination.
      @bomination. 10 месяцев назад

      the earth DOES take in more energy than it radiates.
      the core of the earth absorbs radiation from the sun and the core grows.... expanding earth etc.
      the largest dinosaurs could only have survived on a smaller earth with less gravity... fact.

    • @pranav5788
      @pranav5788 10 месяцев назад +1

      Lol

    • @youcefmoulla1828
      @youcefmoulla1828 10 месяцев назад +14

      @@wwlittlejOfficial That's quote was the stupidest thing I ever heard
      In science

    • @wwlittlejOfficial
      @wwlittlejOfficial 10 месяцев назад +3

      @@youcefmoulla1828 because ur not doing it right, science.

  • @sharmavts111
    @sharmavts111 9 месяцев назад +826

    "What the sun gives us, is a steady stream of low entropy", is the best example for entropy. Thank you for making science more approachable, Derek!

    • @sharmavts111
      @sharmavts111 9 месяцев назад

      @@kwokshseeBy energy, he meant pockets of energy inside those said particles within a system are clumped which means having less freedom to spread out, essentially meaning higher freedom, he used liberal language for more people to understand, if you're so knowledgeable, make a video explaining what's wrong! This reply makes you look dumb.

    • @Chloe-jh3eh
      @Chloe-jh3eh 9 месяцев назад

      i have a black bf

    • @MrCmon113
      @MrCmon113 9 месяцев назад

      What's a "stream" of entropy? Would that work if the sun was all around rather than in one direction?

    • @sharmavts111
      @sharmavts111 9 месяцев назад +5

      @@MrCmon113 A stream of low entropy just basically means "high energy clumped together or fundamental particles with less freedom of movement", which then we spread out increasing our entropy. The entropy of the sun increases as we receive energy!

    • @danielk301
      @danielk301 9 месяцев назад +1

      ​@@kwokshseeLmao

  • @jurekkonarski9991
    @jurekkonarski9991 2 месяца назад +71

    One thing is to know things, the other is to be able to talk about them with passion, spreading out to listeners. You really make great use of the energy you are given :)

  • @kaptainkobb1920
    @kaptainkobb1920 28 дней назад +22

    I am not being hyperbolic here... I am 10 minutes into this video and it is already more useful than my entire undergraduate thermodynamics class. Thank you for making this all make sense 5 years later.

  • @twofishes8846
    @twofishes8846 10 месяцев назад +1263

    About 5 years ago discoved this show. At 69 years old your show now sends me daily down that wonderful rabbit hole... the world wide web gushing with information. I feel like I finally rediscovered the wonder and excitement of a being alive! And ready and armed to discover the unknown with childlike wonder... Thank you all for making life an incredible adventure... again!

    • @cj6004
      @cj6004 10 месяцев назад +54

      Remember, no one can ever be too old to learn and experience!

    • @twofishes8846
      @twofishes8846 10 месяцев назад +38

      @@cj6004 Amen to that friend!

    • @cj6004
      @cj6004 10 месяцев назад +12

      @@twofishes8846 💖✨ cheers to knowledge

    • @alexgeo2615
      @alexgeo2615 10 месяцев назад +10

      Is it scary to be 69 and figure out a new passion? Do you feel like you might miss out on new discoveries or maybe not have the time to learn as much as you want? I am 21 and i am already worried about living in a time where I will probably miss out on many discoveries and on many radical societal changes. What's your philoshopy on this?

    • @LinearConvolution
      @LinearConvolution 10 месяцев назад +16

      @@alexgeo2615 we live at a very fortunate moment in time, where many exciting discoveries are currently happening, and many essential developments have already been made that make our quality of life excellent. Every time period will have its challenges and its frontiers to explore. My perspective is, don't worry about what you might miss out, go dive in and enjoy what there is. There are an inexhaustible number of exciting and world-improving things we can work on, passions we can enjoy, etc. Make the most of the time you have, that will minimize regret.

  • @emilydelano555
    @emilydelano555 10 месяцев назад +981

    This has to be one of the best Veritasium episodes. I got goose bumps because of the beauty of the explanation. Science is so awe inspiring.

    • @marcelboersma
      @marcelboersma 10 месяцев назад +12

      Amen to that. I came here to say exactly that! To the letter.

    • @DipanGhosh
      @DipanGhosh 10 месяцев назад +4

      @@marcelboersma Yeah me too. Same thoughts. One of the best, definitely.

    • @jhayes0128
      @jhayes0128 10 месяцев назад +12

      Yeah who need religion when truth is stranger than fiction

    • @irfanleorezaharoen6083
      @irfanleorezaharoen6083 10 месяцев назад +1

      @@jhayes0128 because science cant explain what caused the universe or big bang happened?

    • @danielrodrigues4903
      @danielrodrigues4903 10 месяцев назад

      The video itself was beautiful indeed, the music helped a lot too. Nearly teared up a couple of times.

  • @biggusbroncus5413
    @biggusbroncus5413 2 месяца назад +38

    As a current Chemical Engineering student, it helps me a lot in understand this concept about entropy, because currently I'm taking Thermodynamics and Carnot Cycle is one of the foundations of understanding the relationships between them.

  • @rainbowbag4214
    @rainbowbag4214 2 месяца назад +13

    These kinds of videos prove to me how beautiful physics is and that is what gets me going on the most difficult days (in my studies). Its so weird that a great physicist like you exists around the same time that I do, and I get to enjoy all your mind blowing videos.. It is incredible indeed how beautiful and flawlessly yet so mysteriously the universe works.. Inspires me to learn more and more about these things.

  • @jacobcannon1493
    @jacobcannon1493 10 месяцев назад +866

    The effort to put this presentation together and for millions to view has used energy very effectively. Please spread out more heat like this over time.

    • @natgazer
      @natgazer 10 месяцев назад +17

      That was good

    • @ajaypatil047
      @ajaypatil047 10 месяцев назад +4

      good one

    • @vigilantcosmicpenguin8721
      @vigilantcosmicpenguin8721 10 месяцев назад +16

      I'm glad to exist at a pocket of the universe that has exactly the right amount of entropy for a Veritasium video to exist.

    • @TheiPodMac1234
      @TheiPodMac1234 10 месяцев назад

      Best answer 😝

    • @lifeunderthemic
      @lifeunderthemic 9 месяцев назад +1

      Propaganda can have that effect.🤫

  • @stefanoscacco459
    @stefanoscacco459 10 месяцев назад +409

    This video literally summed up my last four years worth of lecture courses. It's like seeing your academic life flashing before your eyes, but with better animation.

    • @lomax4992
      @lomax4992 10 месяцев назад +16

      And for free

    • @smlanka4u
      @smlanka4u 10 месяцев назад

      Black Holes grow even without eating ordinary matter. Therefore, gravitational forces can reverse entropy after reducing the amount of Dark Matter.

    • @notyouraveragegoldenpotato
      @notyouraveragegoldenpotato 10 месяцев назад

      That's how I feel when my s.o. talks to me about anything. At the end of being talked at nonstop for several minutes, I can clearly, completely and accurately sum the entire talk up into 1 sentence. Don't waste time. Most precious resource in existence to us. Just jump to the point😂

    • @zjpdarkblaze
      @zjpdarkblaze 10 месяцев назад

      i hope he didnt say entropy every time he talks about entropy. it always confuses me everytime the word high and low entropy is mentioned. he should have used "spread of energy is low/high" or something.

    • @nisbahmumtaz909
      @nisbahmumtaz909 10 месяцев назад

      @@zjpdarkblaze It was necessary for him to use that term, since everything is framed in terms of 'states'. An earlier state of time = low entropy; later = high entropy. Spread of energy is just more words to say same thing.

  • @spidey5281
    @spidey5281 2 месяца назад +12

    that was so beautiful im in awe- the way you connected all these people and concepts i just im in awe. so glad you do the things you do

  • @JENNY-HottiesChannel.1535
    @JENNY-HottiesChannel.1535 23 дня назад +18

    Who got here just in time to see the magic happen? 🎩
    👇

  • @amartyakejora5451
    @amartyakejora5451 9 месяцев назад +738

    I really appreciate how the street segment of this isn't just shots of people who've been asked a complicated question and looking confused. It's been such a disease in mainly digital platform interviews for a long time. Pointless humiliation to make you feel like you've somehow legitimized what your video has to say by way of making people look stupid for not having intricate understanding of fields they don't study/work in. You're actually having an engaging discussion with them and matching their energy. It's stimulating and the insight is friendly. It's such a small part of the video yet is a powerful opening, pushing collective thinking and proper lighthearted discussion that stokes curiosity. Good on you.

    • @kateh280
      @kateh280 9 месяцев назад +19

      Agreed!
      Also Veritasium getting back to his roots of interviewing people on the street :) love it

    • @justaguy3538
      @justaguy3538 9 месяцев назад +17

      Also can't miss the way he integrated the interviews into the video making it more diverse and relatable, brilliant

    • @vojtechjaros7391
      @vojtechjaros7391 9 месяцев назад +3

      I agree as well, plus I might know the answer, but if someone asked me out of the blue on the street, I would not be able to give it.

    • @FutilityOfReason
      @FutilityOfReason 9 месяцев назад +7

      Veritasium: Im a PhD physicist
      Old lady clearly confused: Oh ok carry on 🫡

    • @jamesparkinson3199
      @jamesparkinson3199 9 месяцев назад

      😊

  • @samwilson3329
    @samwilson3329 10 месяцев назад +605

    I love the casual flex. "I'm a PHD physicist." 😂 Very justified.
    Thanks Derek!

    • @zemsorg
      @zemsorg 9 месяцев назад +10

      he’s for sure a good science communicator, but doesn’t actually have a physics phd. If he really had one he wouldn’t need to flex about it.

    • @michaelfrederick7964
      @michaelfrederick7964 9 месяцев назад +93

      ​@zemsorg you should do research before you say things you are uninformed about.

    • @samwilson3329
      @samwilson3329 9 месяцев назад +102

      @@zemsorg He actually does have a PhD from the University of Sydney in Physics Education. The point is, anyone who actually worked hard enough to get a PhD should be completely justified in bragging about it.

    • @lagrangiankid378
      @lagrangiankid378 9 месяцев назад +77

      ​@@zemsorgI don't think he even wanted to flex, it was more about proving to the old lady that he knew what he was talking about.

    • @shenanigans4177
      @shenanigans4177 9 месяцев назад +16

      ​@@samwilson3329 Well PhD in Physics education and PhD in physics are two very very different things. But it doesn't require a PhD to understand the basic physics and few fundamental laws of the universe. Also it's not guaranteed that people who actually have PhD in physics understand it better than people who don't.

  • @myriadshalaks
    @myriadshalaks 2 месяца назад +4

    this is your best video. I can't pinpoint why. maybe the pacing and the way you cut back to the interviews in a shorter but tighter way than u have in the past. anyway, the in the middle part got me. just wow.

  • @JeeAspirantAIR1
    @JeeAspirantAIR1 27 дней назад +5

    This is quite possibly THE most BEAUTIFUL video I've ever seen. I always felt like I hadn't understood entropy, and this video explained it in such a way that I could understand and visualize. Thank you so much.

  • @joranwind8804
    @joranwind8804 10 месяцев назад +611

    I just had a Thermodynamics course in university. I must say, you explained about 2 lectures worth of information in 7 minutes, and you used the rest of the time to make thermodynamics from an engineers nightmare to a scientists interest. Well done!

    • @charlesreid9337
      @charlesreid9337 10 месяцев назад +9

      imho this is his strength. Making mathematical/theoretical science relateable

    • @nick.raptis
      @nick.raptis 10 месяцев назад +3

      Brilliant what you can grasp when your profs aren't just trying to force equations in your mind ❤

    • @GeneralKenobi69420
      @GeneralKenobi69420 10 месяцев назад +10

      And then you still have people like my boomer dad who won't even take a look at anything on RUclips because "Internet bad" but will happily watch TV all day long lol

    • @somedude6161
      @somedude6161 10 месяцев назад

      I've been there and know what you mean. Courses would have been so much easier -- and FUN -- if our courses were taught by people like Derek, Tom Hanks, Matt O'Dowd, Joe Hanson, and the like.

    • @wesleyhempoli5548
      @wesleyhempoli5548 10 месяцев назад +1

      ehh how did he make it less of a nightmare for engineers? this whole comment is absurd

  • @nakulsprakash1640
    @nakulsprakash1640 9 месяцев назад +830

    I'm a chemical engineer, and I always hated the way they defined Entropy to us in textbooks or how teachers would explain it to us. They say Entropy is disorder or randomness which never really tells you what it is. I never completely understood the concept but watching this now after all those years it looks like yes it was so obvious, it is disorder now I get it why it is defined asdisorder.

    • @corpuzbuenafredaa.3492
      @corpuzbuenafredaa.3492 9 месяцев назад +4

      I agree!

    • @charles7747
      @charles7747 9 месяцев назад +6

      OMG. THIS. YES. Especially the bit about the complexity at the end. That really made the light bulb go off.

    • @preetamraj4713
      @preetamraj4713 9 месяцев назад +1

      Bro jee aspirant?

    • @Chloe-jh3eh
      @Chloe-jh3eh 9 месяцев назад +2

      i have a black bf

    • @nakulsprakash1640
      @nakulsprakash1640 9 месяцев назад +2

      @@preetamraj4713 Nah bro completed my grad 2 years ago working in oil and gas now.

  • @jacalynwaymer
    @jacalynwaymer 2 месяца назад +17

    As someone who take a thermal Dynamics class, I can tell you this video has extremely enriched my understanding of entropy. I always thought that entropy was just the wasted energy of a system, for example, an engine or turbine. Now I understand that entropy is so much more than that.

  • @user-bx7cf5hq5k
    @user-bx7cf5hq5k 2 месяца назад +2

    While taking my thermodynamics course, i was sure i’m getting something in my head but all of those datas were so not useful. I just have to say that this video made the whole idea of entropy as mush clear as possible for my level. Thank you so much for this amazing work!!!

  • @Walthanar
    @Walthanar 10 месяцев назад +781

    I am a physicist and so I already knew almost all the info in this video (except for some details on the ratio of photons to and from the earth, and I'm not strong on the Hawking radiation) but nonetheless I found this video EXHILARATING. Your way to travel from a question to an explanation is poetic and a true form of art. I love everything you do. And the imagery and the choice of music were the coronation of it all, so congratulations to the editing team as well. Forever one of the best channels in the whole tube.

    • @deltalima6703
      @deltalima6703 10 месяцев назад +2

      Its not bad, the handwaving was blended in nicely. Hardly notice it if you dont already know its coming, like a magic trick.

    • @Wexexx
      @Wexexx 10 месяцев назад +6

      Yea, same here. Knew all the details pretty much, but damn. He's making pure art of videos. I am always perplexed by his absolute genius ways of making videos.

    • @Thetarget1
      @Thetarget1 10 месяцев назад +7

      Me too. The way he explains a semester of physics in layman´s terms, while still being rigorous and interesting for an expert, is just extremely impressive. He is just such an inspiring science communicator.

    • @litraz87
      @litraz87 10 месяцев назад +3

      100% - amazing to listen to. The best so far

    • @starshipsn-9513
      @starshipsn-9513 10 месяцев назад +2

      @@deltalima6703 handwaving?

  • @likevin145
    @likevin145 10 месяцев назад +745

    Derek's ability to break down ideas of this level of complexity and explain them in a way that almost everyone can understand and appreciate is exactly what we need more in the world. It's education at it's finest. I applaud you.

    • @runtimeterror1358
      @runtimeterror1358 10 месяцев назад +17

      Yes Exactly...
      I have a question though...
      if we assume the world to go on for an infinite amount of seconds... at a certain point everything can suddenly do the improbable thing and go towards low entropy right? Based on what Boltzmann said, going toward lower entropy is extremely improbable, but if time goes on for infinity, every improbable thing will happen once... so after the heat death of the Universe, there will come a time when the big bang appears again...

    • @abcdefggg5658
      @abcdefggg5658 10 месяцев назад

      This comment 💯

    • @kevinedwards7079
      @kevinedwards7079 10 месяцев назад

      Try einstein 6yr old and explain it as such

    • @jyotishmankalita.1754
      @jyotishmankalita.1754 10 месяцев назад +3

      ​​​@@runtimeterror1358you're right!
      At a certain point few things can suddenly do the improbable things which was least likely, but there's a larger basket what happening around. "If after heat death, all the least probable things will happen then it's also true to say all the most probable things will also happen"
      So in a way the the whole scnerio remains same...
      And after heat death there'll be nothing that will happen.

    • @Krish-10
      @Krish-10 10 месяцев назад +6

      ​@@runtimeterror1358Very interesting comment!! After heat death, there'll be no concept of time I guess. Think about it, no entropy, no cause/effect, absolute zero temperature & no particle moves, no space-time curvature, no concept of time, nothing!!!!

  • @chinoleemil8392
    @chinoleemil8392 27 дней назад +1

    The parallel you drew there with the arrow of time was quite surprising and truly fascinating! Great videos, as always!

  • @seanbordenkircher7854
    @seanbordenkircher7854 Месяц назад

    Those interviews were fantastic, edited well and candid.

  • @gilbertgauger3380
    @gilbertgauger3380 8 месяцев назад +833

    Oh, the beauty of teaching with today’s graphics. So much better than when I studied these concepts in the early seventies. Back then these could only be pictures in our minds.

    • @nuggetz9380
      @nuggetz9380 8 месяцев назад +43

      it must have been so cool to experience the transition from black and white textbook image to graphics in today’s time

    • @robertmudrow8034
      @robertmudrow8034 8 месяцев назад +7

      @@nuggetz9380 Yeah, cool to be old.

    • @zen-isaacreymo4016
      @zen-isaacreymo4016 7 месяцев назад

      The diaspora of man's convictions being cradled into submission longs to be discovered through the vicariousness of Terran Myths:Inception. Farewell🙏

    • @joel230182
      @joel230182 7 месяцев назад +27

      @@robertmudrow8034 in a way, yes it is

    • @OnMyLunchBreak07
      @OnMyLunchBreak07 7 месяцев назад +1

      ​@@nuggetz9380But now we'll get to experience going from a video to VR or whatever the future holds for us lol

  • @nyer070
    @nyer070 10 месяцев назад +415

    PhD physicist and engineer here. This brought an incredibly enlightening perspective for me. I must say, the concept of entropy is not a simple one... Many physicist, also as mentioned in the video, battle to fully understand the concept. This brought it all together for me. I'm having a rough night just deeply thinking about entropy because the concept is far more elegant than i ever imagined it. Thank you for this insanely amazing work.

    • @mihaiserbu8447
      @mihaiserbu8447 10 месяцев назад +7

      Hello. Keep thinking about. I am a doctor, and from many years ago ,the entropy discovery change my life and the perspective on human beeing, their reaction, the cause of boring, cause of the war, cause of love, cause of friendship, cause of happiness. Everything relates with entropy.
      Even why we sleep, the way substantia nigra in our brains work is a entropy function machine.

    • @aryantyagi4915
      @aryantyagi4915 10 месяцев назад +2

      Hello good sir, you mention being a physicist and an engineer, may I ask the academic roadmap you took for that? As in what degrees did you get?

    • @Entropic_Alloy
      @Entropic_Alloy 10 месяцев назад +4

      My favorite "joke" that my PhD advisor told me was, "Even thermodynamic professors don't understand entropy." It is one of those things that people like to sum up with, "chaos" but that doesn't really relay the idea well when it comes to what energy is doing and why we use certain terms in the equations.

    • @beasty007
      @beasty007 10 месяцев назад +5

      I asked chatgpt about this same thing and it's surprising that it's almost the same as this video 😮
      Prompt-
      Try to relate entropy with the sun, earth and universe, if possible include philosophy also.
      Ans-
      In the context of the sun, earth, and the universe, we can explore the concept of entropy from different perspectives, including scientific and philosophical aspects.
      From a scientific standpoint, entropy plays a role in understanding the natural processes and evolution of systems. The sun is a massive source of energy that radiates heat and light into space. This energy flows from a high-energy state (the sun) to a lower-energy state (the surroundings). As this energy disperses and spreads out, it leads to an increase in entropy.
      On Earth, entropy is related to the concept of thermodynamic equilibrium. Over time, energy and matter tend to spread out, seeking a state of equilibrium or balance. For example, consider the water cycle, where water evaporates from the surface, condenses into clouds, and eventually precipitates back to the surface. This cyclic process involves the transfer and transformation of energy, but it also leads to an increase in entropy as energy is dissipated and distributed.
      In the broader context of the universe, the concept of entropy is linked to the idea of the arrow of time and the second law of thermodynamics. The second law states that in a closed system, the entropy tends to increase over time, meaning that disorder or randomness tends to prevail. This idea is often associated with the observation that systems naturally evolve from states of low entropy (high organization) to states of high entropy (disorder).
      From a philosophical perspective, entropy can be seen as a metaphor for the nature of existence and the impermanence of order. It aligns with the philosophical concept of change, decay, and the fleeting nature of things. The increase of entropy symbolizes the inevitability of the passage of time, the dissolution of structure, and the constant transformation of the universe.
      In summary, entropy is a fundamental concept that relates to the flow of energy, the tendency of systems to move towards equilibrium, and the increase of disorder or randomness over time. It has scientific implications in understanding natural processes and is intertwined with philosophical ideas about the nature of existence and the passage of time.

    • @yjas8904
      @yjas8904 10 месяцев назад +1

      @@Entropic_Alloy lol yeah I think they don't really know 😂. wish this video available when I was a student. but it's never too late because it can be useful in my current work also

  • @The_Indominus_
    @The_Indominus_ 2 месяца назад +1

    The Best RUclips Video I've ever seen,
    and explaining these complex concepts so easily yet with each and every detail is just Fabulous,
    the way you explained from History, to engines till the whole universe is just Astounding
    Hats off to you!! @Veriatasium

  • @ninasanai28
    @ninasanai28 Месяц назад +2

    I love how neat and low entropy your work desk is😊

  • @tomaskujinek
    @tomaskujinek 10 месяцев назад +468

    It is incredible how you can explain complex topic in 20 minutes that everyone grab a basic concept of it. Love it. Keep it going.

    • @agustinfranco0
      @agustinfranco0 10 месяцев назад +28

      @repentandbelieveinJesusChrist8 yeah yeah whatever...

    • @viyacheslav.
      @viyacheslav. 10 месяцев назад +1

      Question. What if we take a small black hole (let the temperature be T=50000 Kelvin - the radiation of photons with low entropy) and we send particles or photons with high entropy into this hole. It turns out that the black hole will absorb high entropy and radiate low. In other words, the energy from the cold will go to the hot?

    • @criticalthinker420
      @criticalthinker420 10 месяцев назад +7

      @repentandbelieveinJesusChrist8 His name was not Jesus. Your church couldn't even not lie about his name. Your church doesn't care about the truth, they only care about if you believe in what they want you to believe in. They don't even believe in it themselves. Most pick and choose to believe in the things they want, and just ignore the rest. You can even ask one christian something, then another, and then another and you will get three different answers but they all swear their answer is "the" truth.

    • @drenz1523
      @drenz1523 10 месяцев назад +1

      ​@@criticalthinker420okay christian "missionary" comments are annoying but this is straight up religious discrimination and is not right.

    • @SoorajSuseelan10001
      @SoorajSuseelan10001 10 месяцев назад +8

      ​@@drenz1523 calling out Religions is correct. End the stupidity

  • @Mark-sl4bw
    @Mark-sl4bw 10 месяцев назад +323

    My professor for gen chem 1 and 2 taught us to think of entropy in this way. Reading the comments of others about how they were never taught to think of entropy like this, I'm once again reminded of how wonderful of a professor he was.

    • @rueben225
      @rueben225 10 месяцев назад +10

      I had a science teacher back in grade school that set me up to think about things one step outside of what we immediately observe and I have treasured his insight my whole life.

    • @512TheWolf512
      @512TheWolf512 10 месяцев назад +4

      This is standard interpretation of entropy here. I personally was taught in Kyiv polytechnic. But it's the same country -wide.

    • @LoanwordEggcorn
      @LoanwordEggcorn 10 месяцев назад +1

      @@rueben225 That teacher made you smarter for sure. I always try to think "outside the box" and reason things from first principles.

    • @LoanwordEggcorn
      @LoanwordEggcorn 10 месяцев назад

      @@512TheWolf512 Western education is likely less standardized, not coming from a Soviet style command structure/more rigid/traditional culture.

    • @fisty539
      @fisty539 10 месяцев назад +4

      I had a teacher called Dr Ollerenshaw in the UK. He was the most silly person I've ever met! He had "fun tie fridays" and "two tie tuesdays" that he'd normally wear one around his head 😆. My fave teacher hands down

  • @brendonrezende5892
    @brendonrezende5892 2 месяца назад

    why have I just discovered your videos? AMAZING content relayed in the most captivating way possible. I will ensure my kids look at these. If I did, I'd have such a passion for it all. You've done, in mere minutes, what the schooling system has failed to do for me in decades

  • @chewasa6458
    @chewasa6458 Месяц назад

    love this host - perfect pace/no condescension

  • @tommymarshall69
    @tommymarshall69 10 месяцев назад +758

    Derek is an international treasure. This is what it looks like when a really smart person goes into teaching.

    • @calamorta
      @calamorta 10 месяцев назад +23

      I disagree. You have thousands of "really smart people" who just don't teach that well despite choosing this path. Geniuses even. He's special when it comes to these videos.

    • @dennisklopper1818
      @dennisklopper1818 10 месяцев назад +5

      No human is smart, otherwise we would live in a perfect world...look at the mess, past, present and if God does not intervene the future is unimaginable.
      Only God is smart, agree ?
      Believe the ONLY gospel that saves today which is 1 Cor15 vs1-4 KJV Bible.

    • @hilbillie
      @hilbillie 10 месяцев назад +14

      There are plenty brilliant men that can't teach. This is what happens when a talented teacher, along with a team of solid, educated and talented group of support staff create an educational video (with endless hours of time put into the project) .... this is teamwork, talents and time. No university professor could compare in a lecture. Impossible.

    • @hilbillie
      @hilbillie 10 месяцев назад +9

      ​@@calamorta He and his entire support staff. This isn't a one man operational and took a lot of time and effort.

    • @nomennescio7571
      @nomennescio7571 10 месяцев назад +10

      ​@@dennisklopper1818Well, you're the one who's definitely not smart if you believe that nonsense 😅

  • @francescosulli7575
    @francescosulli7575 9 месяцев назад +485

    I am a young physics student at the University of Trieste, Italy. This video made me emotional, thinking about concepts like this explained in this way makes me shiver. Truly congratulations, it's thanks to videos like these that people get passionate about physics

    • @EL.DON.CORLEONE
      @EL.DON.CORLEONE 9 месяцев назад +8

      dude ... why you so low entropy?

    • @NLghost010
      @NLghost010 9 месяцев назад +3

      man i loved visiting trieste a couple weeks ago but i hated how much car traffic there is. Food was great though!

    • @nicklipinski4081
      @nicklipinski4081 9 месяцев назад +4

      I’m only only a formally uneducated intern at a mechanical engineering company and this video made me emotional. I should really take a thermodynamics class or something.

    • @francescosulli7575
      @francescosulli7575 9 месяцев назад +3

      @@NLghost010 you must be crazy to drive in Trieste ahaha

    • @arasdb9032
      @arasdb9032 9 месяцев назад +1

      io mi emoziono a vedere un italiano sotto questo video...e pure intelligente (ti invidio)

  • @N0Xa880iUL
    @N0Xa880iUL 27 дней назад +5

    This video is eye opening, life changing, pp touching, etc.

  • @rdjualo
    @rdjualo Месяц назад +1

    watching this after my long exam in thermodynamics gives me an excellent insight of what I really studied, thank you for this video!

  • @U.Inferno
    @U.Inferno 10 месяцев назад +337

    Fun fact with the rubiks cube metaphor: it eventually bottoms out on how unsolved a cube can be because the maximum distance a state can be from the solution is 20 moves. So once you reach 20, any move you make either maintains or decreases that number.

    • @Tony-il8ly
      @Tony-il8ly 10 месяцев назад +63

      What if you smash the cube?

    • @Cd5ssmffan
      @Cd5ssmffan 10 месяцев назад +23

      @@Tony-il8ly 🤓

    • @XtreeM_FaiL
      @XtreeM_FaiL 10 месяцев назад +25

      What happens to the entropy if you solve to cube by removing the stickers? :P

    • @Wulthrin
      @Wulthrin 10 месяцев назад +91

      @@XtreeM_FaiL the cube owner becomes quite angry so the entropy moves there

    • @skasev
      @skasev 10 месяцев назад +7

      So my life peaked at age 20? That’s deep

  • @tonnymathew3301
    @tonnymathew3301 10 месяцев назад +697

    The part where Hawking attempts to disprove Bekenstein but eventually ends up proving his theory leading to one of the best discoveries in Physics will always be a jaw dropping story for me! This is exactly why I took a degree in physics!

    • @sander_bouwhuis
      @sander_bouwhuis 10 месяцев назад +80

      This is why science works. It has the power to correct and change with new insights.

    • @whannabi
      @whannabi 10 месяцев назад +1

      ​@@sander_bouwhuismath

    • @thijsmuilwijk8517
      @thijsmuilwijk8517 10 месяцев назад +50

      Hawking's jaw dropped too💀 (I'm sorry for this awful joke)

    • @LucarioredLR
      @LucarioredLR 10 месяцев назад +12

      "Oh dang, guess he was right"

    • @egggames8059
      @egggames8059 10 месяцев назад +12

      Happens ridiculously frequently

  • @joeyraggs
    @joeyraggs Месяц назад +2

    Very happy I discovered your channel. Perfect mix of science and history.

  • @rylandsmith8552
    @rylandsmith8552 16 дней назад +1

    Just emailed this to my physical chemistey professor to put on his moodle page. Im positive he will, this ties so damn much of our course together in a neat little package with a bow.

  • @vigneshv5231
    @vigneshv5231 10 месяцев назад +388

    The analogy with the tea at the end is mind blowing for me. As an engineering student I knew that entropy caused the milk and tea to mix so spectacularly, but I never related it with our lives being in this spectacular state before heat death eventually happens. It takes the perfect knowledge and some beautiful articulation to explain such things!!! What a video!!!

    • @Dadofer1970
      @Dadofer1970 10 месяцев назад +14

      It is also an absolutely perfect and instantaneous refutation of the old creationist argument that the emergence of life by natural selection supposedly violates the 2nd law of thermodynamics.

    • @ivanstroganov5458
      @ivanstroganov5458 10 месяцев назад +4

      Interestingly this is the exact same example Sabine Hossenfelder used in her video about entropy 2 weeks ago. Overall the 2 videos are very similar 🤷‍♂️

    • @iankrasnow5383
      @iankrasnow5383 10 месяцев назад +2

      I also learned a lot about entropy as a materials science student. A key piece that's been left out is that some entropy generating processes are fundamentally not reversible, and so they can't be used to generate work. Mixing milk and tea is a good example. When you mix milk and tea, the entropy increases quite a bit. However, it doesn't release heat, and you can't use the mixing of tea and milk to do work. If you wanted to separate the milk and tea however, you would need to do quite a bit of work.
      The point is a lot of entropy is being produced all the time even without the ability to do work. For me, the relevance is in creating alloys, and in refining ores or recycling metals. It takes a lot of chemical and heat energy to separate elements into pure forms. Then you combine them together in mixtures with various properties, but you don't get any of that energy back.

    • @dougclendening5896
      @dougclendening5896 10 месяцев назад +1

      I wonder what the next universe is going to be like.
      Physics is interesting but can only play by the rules of this current reality.

    • @justink2101
      @justink2101 10 месяцев назад

      ​@@repentandbelieveinJesusChrist9Amen 🙏

  • @shaded3474
    @shaded3474 10 месяцев назад +288

    As a mechanical engineering undergraduate, I would thank you for making this video explanation of entropy. And based on what I have seen on RUclips, this is the absolute best explanation of the Carnot Cycle.

    • @bomination.
      @bomination. 10 месяцев назад

      the earth DOES take in more energy than it radiates.
      the core of the earth absorbs radiation from the sun and the core grows.... expanding earth etc.
      the largest dinosaurs could only have survived on a smaller earth with less gravity... fact.

    • @cvbattum
      @cvbattum 10 месяцев назад +5

      Did I understand correctly that the way energy moves between the bars is the same general concept of time moving forward? The states where entropy decreases are so extremely unlikely that it can't actually happen, same as the states where heat moves from cold to hot being too unlikely for them to happen? If so, that is mindblowing?
      Would that also mean that time travel is possible _in theory_ if we manage to reverse the increase in entropy?

    • @interstellarsurfer
      @interstellarsurfer 10 месяцев назад +2

      Thank you for actually describing what the video is about. Not even Veritasium could be bothered to do so. 🙄

    • @shaded3474
      @shaded3474 10 месяцев назад

      ​@@cvbattum Well, we can say this in reverse. If (past) time travel would ever be possible in future, it would be accompanied by the decrease in entropy of the universe. Which ultimately leads to the reason why it won't ever be possible in the first place. 😅

    • @shaded3474
      @shaded3474 10 месяцев назад

      There is this absolutely simple example to explain the increasing entropy of the universe:
      Consider a balloon inflated to say 20% of its full capacity. Now attach suction cups all over its surface and pull in all directions. The balloon would stretch, and as a consequence the entropy of the air molecules inside would increase, just the newly created volume inside would be filled by vacuum.
      The universe can be thought of in a similar way.

  • @kubrickguy
    @kubrickguy 2 месяца назад +1

    Love your video. The easiest way to understand complexity. Brilliant. Thank you 🙏

  • @arithex
    @arithex 10 месяцев назад +617

    I have a degree in chemical engineering .. so, I studied thermodynamics for years. This 20 min youtube video would have helped shortcircuit a year or two of struggling to understand the concept of entropy.
    The part about the early universe being uniform and evenly distributed, but low entropy, due to gravity -- was particularly mind-blowing. That was something that always bothered me about the concept of entropy, at universe-scale.

    • @eshaansangodkar7534
      @eshaansangodkar7534 10 месяцев назад +22

      Actually that is the part I didn’t understand. How is gravity causing it to be low entropy? If someone could answer

    • @MrAwdse
      @MrAwdse 10 месяцев назад +34

      @@eshaansangodkar7534 Because gravity causes things to clump together but in the early universe things appear to be evenly spread, which is a very unlikely configuration which means that it will shift out of that configuration into a more likely one which is why it has low entropy because of that inevitably shift of states.

    • @SabrinaXe
      @SabrinaXe 10 месяцев назад +2

      @@MrAwdse if things were evenly spread then it had high entropy not low?
      I don’t understand the gravity part either

    • @fadhilalauddin1365
      @fadhilalauddin1365 10 месяцев назад +7

      ​@@MrAwdseFrom what I can understand, you are implying that there is gravity on the early stage of the universe, is that right? If so, then why don't all matters on the universe clump together into one because of gravity, instead of expanding as to how the universe is now? Sorry, I am very, VERY confused on that part 😖

    • @kennethbransford820
      @kennethbransford820 10 месяцев назад

      === You need an ordered universe first. The energy from the big bang a first cause event originated in a compact ordered state. Not by accident. Now, entropy is at work. Already the universe is 13 + or - billions years old. The creation of elements took a few billion years to achieve. Now a terraformed earth doesn't just happen and also requires stepped progress. Not by accident peoples. Your brain that is an organic computer no way could have come from dirt. Impossible. Thinking abilities and consciousness are because of complex formulaic chemical equations also not by accident. No way the laws of physics or chemistry could allow and cause your brain, an organic computer to happen from dirt. Impossible ==== Evolution = Self Assembling Atoms = Impossible ====

  • @K-xor
    @K-xor 10 месяцев назад +443

    It took me years to wrap my head around the concept of Entropy.
    What helped me the most was studying the history of the concept.
    This video is an accurate summary of what entropy is.

    • @whichfilmisit
      @whichfilmisit 10 месяцев назад +1

      -ISNT IT STUNNING VIDEO?!)-

    • @Gave-rf1hr
      @Gave-rf1hr 10 месяцев назад +2

      I still dont understand it lol

    • @thethirdjegs
      @thethirdjegs 10 месяцев назад +1

      ​@@Gave-rf1hrhow not? Or which part?

    • @DileepKumar-ng8ys
      @DileepKumar-ng8ys 10 месяцев назад +1

      ​@@DBeskar6605if u have 138 iq, then u will observe and decide u won't believe those sentences blindly lol

    • @Casey_Xx_vLogS
      @Casey_Xx_vLogS 10 месяцев назад

      heYYY

  • @abhijithalder4996
    @abhijithalder4996 22 дня назад +1

    When i was a grad student of physics i felt thermodynamics was so boring... Now it blew up my mind...
    I wish i had such a good resource available back then..

  • @Carrymejane
    @Carrymejane Месяц назад +26

    25:36 It's makes me cry even harder, thanks for the whole message. I think this video is the most beautiful way to help someone at their most depressive episode to not let themself die and make them become interesting at life much bigger

    • @dhgmllcshea5038
      @dhgmllcshea5038 Месяц назад +2

      Glad you got back on track... the butterfly effect is awesome.

    • @Carrymejane
      @Carrymejane Месяц назад

      @@dhgmllcshea5038 thanks alot! I hope you did well too ❤️‍🩹

    • @hybmnzz2658
      @hybmnzz2658 Месяц назад

      “Or (the Unbelievers’ state) Is like the depths of darkness In a vast deep ocean, Overwhelmed
      with billow Topped by billow, Topped by (dark) clouds: Depths of darkness, one Above another:
      if a man Stretches out his hand, He can hardly see it! For any to whom Allah Giveth not light,
      there is no light!” [Al-Qur’aan 24:40].
      Suhayb ibn Sinān Ar-Rūmi (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "How wonderful the affair of the believer is! Indeed, all of his affairs are good for him. This is for no one but the believer. If something good happens to him, he is grateful to Allah, which is good for him. And if something bad happens to him, he has patience, which is good for him."
      Sahih/Authentic. - [Muslim]
      Join Islam for goodness in this world and the hereafter. Allah will save you from darkness inshallah.

  • @SuperVITHURSHAN
    @SuperVITHURSHAN 5 месяцев назад +1145

    This is one of the moments when I felt that the like button is not enough to appreciate his work. Thanks.

  • @shanmaxx5
    @shanmaxx5 7 месяцев назад +1495

    16:20 the introduction of the sun did not need to go that hard. I almost got goosebumps, lol.
    This was a beautifully done video and loved every second.

    • @shill1444
      @shill1444 7 месяцев назад +89

      That is quite LITERALLY what I was thinking. I know next to nothing about physics and after watching this video I felt my IQ jump up about 100 points. LOL

    • @human_thing.
      @human_thing. 7 месяцев назад +2

      lol me to

    • @uz.f1746
      @uz.f1746 7 месяцев назад +31

      It's THAT important though... that's why he went that hard imo...

    • @ungalohoganga
      @ungalohoganga 7 месяцев назад +20

      The sun is a wondrous body. Like a magnificent father! If only I could be so grossly incandescent!

    • @TheEquationEnigmaBYJEETU
      @TheEquationEnigmaBYJEETU 6 месяцев назад

      Soo true

  • @samharris3263
    @samharris3263 2 месяца назад

    This was such a great video - the ideal engine bit was a bit dryer than I think some people want to deal with but otherwise epic intro for anyone on what entropy is

  • @christophergame7977
    @christophergame7977 Месяц назад

    The excellent thing about this RUclips is that it interprets entropy, denoted S, as 'extent' of dispersal or spread of energy in a body, the opposite of concentration. It wisely doesn't push the oft encountered, but scarcely meaningful, talk of "disorder" and "randomness". Entropy is something like 'volume', or 'extent', in 'energy space', so to speak. The intensive quantity temperature, denoted T, is the homogeneous conjugate variable of entropy. With matter transfer and thermodynamic work prevented, an infinitesimal amount of heat transfer into the body equals the sum T dS + S dT, for infinitesimal changes dS and dT.

  • @lucas_k23
    @lucas_k23 9 месяцев назад +657

    I've been studying aerospace engineering now for 2.5 years and when I say that this channel is an absolute blessing, probably all STEM students here would agree. The way you can not just explain a certain topic, but - much more importantly - kind of contextualise and explain how the topic integrates into the bigger picture of how the world works in a more general fashion makes this channel an essential tool for us. This video was probably the best example. By far. Funnily enough, I'm writing the thermodynamics exam in about two months. All the names you mentioned rung a bell immediately. Before the video, I knew what entropy was in the sense of "state of disorder" and how it's used in formulas, but after this video, I get the sense that I'm starting to internalise and being able to handle the topic. This video didn't teach me more about thermodynamics, instead it taught me about how everything outside of thermodynamics is affected and intertwined with thermodynamics. For me, I see it this way: at university, nature is divided into subjects and this channel undoes those divisions, brings those subjects together and "reintegrates" them into nature. So please never stop making these videos, because this channel fulfills an important function for many of us.

    • @sivaranjani7432
      @sivaranjani7432 9 месяцев назад +5

      My dream is become a aero space engineer . Now I am studying final year high secondary.. can you explain about the importance aerospace engineering like about work what we actually do it and we studied about the universe and space or not and what are subject covered in aerospace engineering.. please 😊

    • @zarlus8
      @zarlus8 9 месяцев назад +7

      I've said for years now, that the way we teach science (US); splitting them into different subjects, does our understanding of the principles a disservice. Sure, it's easy to understand subjects when compartmentalized, but it doesn't allow for lateral and connective understanding of all scientific subjects.

    • @yogeshpatel2018
      @yogeshpatel2018 9 месяцев назад

      Exactly @lucaskytl, I got the same feeling when I watched the video about mandelbraught set

    • @stevevanscoik398
      @stevevanscoik398 9 месяцев назад

      Like I said, he makes learning easy.

    • @tonyb1968
      @tonyb1968 9 месяцев назад +4

      I'm just a truck driver. But with this knowledge I shall be a truck driver with a bit more knowledge

  • @DeathDefiant
    @DeathDefiant 10 месяцев назад +455

    The quote "Nothing happens. And it keeps not happening, forever..." still chills me and really puts 'Heat Death' into perspective.

    • @vanyel_etc8695
      @vanyel_etc8695 10 месяцев назад +34

      Keep in mind that it requires the universe to be expanding or staying the same size for it to happen. There's still a chance that the universe isn't going to expand forever, and even in a state of heat death it may contract, pushing everything back together into a state of low probability.
      Given enough time, all probabilities will happen. I see no reason why this wouldn't also.

    • @isaiahmumaw
      @isaiahmumaw 10 месяцев назад +36

      @@vanyel_etc8695​​⁠given enough time, all mathematically possible things CAN happen. Not all mathematically possible things will happen, as the occurrence of one can and often does prevent the occurrence of another.

    • @altrag
      @altrag 10 месяцев назад +25

      On the upside, nothing happening includes nothing capable of having an existential crises about nothing happening :D.

    • @nerdonspeed3493
      @nerdonspeed3493 10 месяцев назад +1

      ​@@vanyel_etc8695when the universe stop expanding i think we have reach max entropy

    • @anthonyjackson6319
      @anthonyjackson6319 10 месяцев назад +1

      You should read Stephen Baxter. He wrote some amazing novels that cover the consequences of the heat death. I think the specific title was "Time", though his other notes are equally as good and cover other big cosmological subjects.

  • @matthewpepper902
    @matthewpepper902 Месяц назад

    Wow thanks for breaking down entropy in a really consumable way for me. That helped me really understand why their is a direction in the flow of time

  • @chrisstinson7608
    @chrisstinson7608 Месяц назад +1

    Seriously, one of the best videos on RUclips.

  • @bhanusM99
    @bhanusM99 5 месяцев назад +675

    I still remember my first lecture on thermodynamics during my masters. My professor asked us do we know what entropy means, everyone said yes. He replied what you learned is wrong forget about it and started explaining about entropy for 30mins. In the end we understood that we really misunderstood what entropy is in our undergrad

    • @bonkmeabeab3563
      @bonkmeabeab3563 4 месяца назад +39

      entropy is when everything tends toward death and destruction grr 😡😡

    • @matthewcarter919
      @matthewcarter919 4 месяца назад +3

      Stephan doesn't get enough credit

    • @sksarkar18
      @sksarkar18 4 месяца назад

      . v!😅.

    • @mahajveemahajvee8941
      @mahajveemahajvee8941 4 месяца назад

      ​@@bonkmeabeab3563 Degree of randomness

    • @Vicinfi
      @Vicinfi 2 месяца назад +2

      now tell us 😁

  • @shervinrad100
    @shervinrad100 8 месяцев назад +282

    I have a masters in chemical engineering and struggled to understand this for years. This is the most elegant and beautiful and logical explanation of thermodynamics I have ever seen and heard.

    • @MyMusicClear
      @MyMusicClear 7 месяцев назад +2

      Altho it goes more on a quantum level, I really liked Carlo Rovelli’s explanation in “The order of time”. Even he mentions how there is not such a thing as arrow of time but instead the illusion of it depending on the scale you examine a system.

    • @elizabeth-od8xt
      @elizabeth-od8xt 6 месяцев назад +1

      I'm getting my bachelors in chemical engineering right now! im currently a sophomore and taking thermodynamics, thought this was really cool

    • @identiticrisis
      @identiticrisis 6 месяцев назад

      I have a ChemEng masters and actually really enjoyed thermodynamics (great lecturer, always helps).
      I still learned something from this.
      I do feel it rather skipped over the fact that, aside from fossil fuels and nuclear, the sun's incident energy is all that we get. Therefore it should be considered something of a budget, in synergy with the planet's existing energy systems and with total respect for this concept of entropy (economists in particular need to learn this).
      Especially now given the increasing challenge with climate change.

    • @gorblebuiswack6046
      @gorblebuiswack6046 6 месяцев назад

      well, the glory of physics is just changing your timelines to make it correct. So in terms of chemical engineering, this is a vast oversimplification based on extending the timeline to make it net out. Instead, you have to be practical

    • @kayakMike1000
      @kayakMike1000 6 месяцев назад

      How do you get a master's in any engineering field and not understand freshman thermodynamics? It's super basic stuff.

  • @Nefylym
    @Nefylym Месяц назад +1

    I thought entropy existed because of the arrow of time, but you just so beautifully demonstrated that the arrow of time exists because of entropy. Mind blown sir.

  • @user-dg3px2op2g
    @user-dg3px2op2g 2 месяца назад

    The best channel on the internet! It's a continuum of insights and learning; full of examples and great pedagogy!

  • @Miguel-ng5wm
    @Miguel-ng5wm 10 месяцев назад +370

    The value of your channel is immeasurable. Thanks for making such great educational videos. You return more value to humanity than what you take. You are an "digital entropy anomaly" thank you!

    • @masudsaleh5155
      @masudsaleh5155 3 месяца назад

      😂😂😂😂 *Atheists claim that they are intellectually superior to religious people because they are willing to question their beliefs, whereas religious people are dogmatic and refuse to question their deepest beliefs and won't consider evidence that could potentially undermine those beliefs.*
      Well, have you ever heard an atheist say:
      "I wonder if constantly increasing individual freedom is a good thing."
      "I was wrong about democracy being a viable system."
      "Maybe the sexual revolution was a mistake."
      "The evidence shows that equality of the sexes is destructive."
      "Let's have a debate on if freedom of speech and religion is good for society."
      "Could it be that women need fewer rights?"
      I have never seen an atheist raise these questions or hold these positions up to serious scrutiny. Nor do they provide any evidence for their beliefs on these matters. They simply assert them and ridicule and mock anyone who disagrees with them.

  • @dylanstack8710
    @dylanstack8710 9 месяцев назад +262

    I’m an HVAC operating engineer and I’m always so impressed how the process is based on a genius manipulation of core physics principles. Almost everything we do is based on using physics to manipulate things to our purposes.

    • @dakotadillon5981
      @dakotadillon5981 8 месяцев назад +2

      I haven't looked it up or anything, but I've heard that HVAC is essentially transferring heat from one place to another...or making a massive group of atoms and molecules vibrate less via transferring their shakiness to another massive group of atoms/molecules somewhere eslse. What I don't get is how that transferring process is performed in a machine made out of stuff we can and do produce on a massive scale. I mean, I can heat up an ice cube with my hand to perform rudimentary HVAC stuff by just holding it for awhile...but how the hell do I make the ice cube even colder than it was via transferring its thermal energy someplace else somehow?

    • @dylanstack8710
      @dylanstack8710 8 месяцев назад

      @@dakotadillon5981 Well you’re already some of the way there understanding molecules moving and heat energy. HVAC pretty much is entirely based on the pressure temperature relationship. The higher the pressure the higher the temperature. In HVAC a machine will have a refrigerant that has properties that are beneficial for us when manipulating its pressure. The machine will act as a pump rapidly reducing the pressure of the refrigerant causing the gas to expand and release a tremendous amount of energy creating a cooling effect. Think liquid nitrogen. Once it’s exposed to our natural atmosphere the pressure holding the molecules is lower allowing it to expand and become very cold. Refrigerant will do this in the machine and become cold. Then it will be exposed to a cooling medium which in your home is the air inside. Another law of thermodynamics: Heat will always transfer from the warmer body to the colder body. The heat in the air will transfer to the cold refrigerant. The machine will pump the refrigerant back to a much higher pressure. This higher pressure will allow it to condense at a relatively high temperature back into a liquid refrigerant at which point it rejects heat away from the condenser to a place where it is less objectionable like outside your home. I always say that hvac machines act as a heat energy vacuum, pulling heat energy from where we don’t want it and placing it where it’s no longer a nuisance to us.
      It is essential to understand when changing states from a liquid to a gas/ vapor a large amount of energy is released. Like water refrigerant will boil off and condense at different temperatures based on the pressure it’s under. A higher pressure creates a higher boiling point as the pressure is acting on the molecules not allowing them to expand and cool down. This is why we sweat not because our sweat on our skin makes us lose heat but when the sweat evaporates from our skin energy is released creating a cooling effect for us. Since there is no such thing as cold ( just the absence of heat ) if you lower the pressure the molecules will have more space between them which creates the cold condition. The earths atmosphere acts as a kind of container trapping heat and applying pressure allowing heat energy from the sun to remain and warm our surroundings. One of the many reasons earth is such a special place.
      This is a fairly poor explanation of Refrigeration theory but really I just want to illustrate that it wouldn’t be possible without physics and how what we know about the physical world informs how we can manipulate this science to our benefit and understanding.

    • @jagatfx
      @jagatfx 8 месяцев назад

      @@dakotadillon5981 Let's break down the HVAC process:
      Basic Principle: Everything is made up of atoms and molecules. When these atoms and molecules move or vibrate quickly, we perceive that as heat. When they move slowly, we perceive it as cold. The goal of HVAC systems is to control the speed at which these atoms and molecules move, thereby controlling the temperature.
      How HVAC Works:
      Heating: This is straightforward. You add energy (like burning gas or using electricity to produce heat) to make molecules move faster.
      Cooling: This is where it gets interesting. To cool a space, you need to remove heat from it. This is done using a process called refrigeration.
      Refrigeration Cycle:
      Evaporation: Inside the part of the HVAC system that's meant to cool (like the inside of your fridge or the indoor unit of your air conditioner), there's a coil filled with a special liquid called a refrigerant. This refrigerant evaporates (turns from liquid to gas) and in doing so, it absorbs heat from the surrounding area. This makes the surrounding area cooler.
      Compression: This gas is then compressed by a compressor. When you compress a gas, it gets hot (think of it as squeezing the molecules closer together, making them move faster).
      Condensation: This hot gas then flows to another coil, usually outside your house or the back of your fridge. Here, the gas condenses back into a liquid, releasing the heat it absorbed earlier. This is why the back of your fridge is warm.
      Expansion: The liquid refrigerant then goes through an expansion valve, where it expands and cools down, ready to evaporate again and absorb more heat.
      Your Ice Cube Analogy: When you hold an ice cube, your hand is warmer than the ice, so heat flows from your hand to the ice, melting it. To make the ice cube even colder, you'd need to remove heat from it. That's what freezers do. They use the refrigeration cycle to continually remove heat from the inside, making it colder and colder.
      In essence, HVAC systems are sophisticated ways of controlling where heat goes, either adding it to a space or removing it. The machinery and chemicals we use (like refrigerants) are specifically designed to be efficient at this heat transfer process.
      Your hand can both give off and absorb heat, depending on the circumstances. Here's how your hand can remove heat:
      Difference in Temperature: Heat naturally flows from a hotter object to a colder one. If your hand is colder than another object, heat will flow from that object to your hand until they reach thermal equilibrium (i.e., they are the same temperature).
      Conduction: When you touch something, heat can be transferred directly through the materials involved. This is why a metal spoon feels cold when you first pick it up from a drawer - it's conducting the heat away from your hand.
      Convection: If your hand is cooler than the surrounding air, it can absorb heat from the air. This is especially true if there's airflow. For example, if you've ever wet your hand and then waved it in the air, you've felt it get cooler. This is because the water is evaporating (which requires heat) and the moving air is carrying away the heat.
      Radiation: All objects emit infrared radiation. The amount and wavelength of this radiation depend on the object's temperature. If your hand is cooler than its surroundings, it will absorb more radiation than it emits.
      Evaporation: This is a significant way your body, including your hands, cools down. When you sweat, the sweat evaporates, which requires heat. This heat is taken from your skin, cooling it down. If you've ever put rubbing alcohol on your skin, you've felt this effect strongly, as alcohol evaporates faster than water.
      However, it's important to note that while your hand can remove heat from objects warmer than it, it's not as efficient as the mechanisms used in HVAC systems. The human body is designed to maintain a relatively constant internal temperature, so while it has mechanisms to shed excess heat or generate warmth when needed, it's not designed to function as a refrigeration device.
      Cooling an ice cube with a human hand presents a paradoxical scenario. Under typical conditions, a human hand is warmer than an ice cube, so if you were to hold an ice cube, heat would transfer from your hand to the ice, causing the ice to melt. Let's entertain the idea of a human hand cooling an ice cube. Here's what would need to happen:
      Hand Temperature: The temperature of the hand would need to be lower than the ice cube. This means the hand would need to be colder than 0°C (32°F). This is not a natural or safe state for human tissue. Prolonged exposure to such temperatures can lead to frostbite.
      Heat Transfer: If the hand were colder than the ice cube, heat would flow from the ice cube to the hand, causing the ice cube to become even colder. The rate of this heat transfer would depend on the difference in temperature between the hand and the ice cube.
      External Factors: The surrounding environment would play a role. If the ambient temperature is warmer than the ice cube, the ice cube would also be gaining heat from the environment. To effectively cool the ice cube, you'd want to minimize this external heat gain.
      In reality, achieving this scenario would be highly impractical and potentially harmful. The human body is not designed to function at temperatures below freezing.

    • @briancarroll6803
      @briancarroll6803 8 месяцев назад +7

      ​@@dakotadillon5981have you ever held a can of air duster upside down and sprayed it? Mysteriously cold right? Start there, but close the system as you think through it. Remember the components of an air conditioner e.g. compressor, Freon, etc. It'll make sense to you.

    • @olethanh
      @olethanh 8 месяцев назад

      ​@@dakotadillon5981the channel Technology Connection has a really good video explaining how it works if you are interested

  • @user__214
    @user__214 Месяц назад +1

    Thank you for describing entropy as the "spreading out" of energy! I've never seriously studied physics but that was the understanding that I also came to as a layperson. Yet, my friends who have studied physics always insist on saying that entropy is about "disorder", even though that seems like a much less apt metaphor!

  • @arkabanerjee7704
    @arkabanerjee7704 Месяц назад

    Videos like these will be there to connect different schools of thoughts and bring them together to make something larger. Keep on doing the good work brother.

  • @amadeousdervisi75
    @amadeousdervisi75 5 месяцев назад +622

    It's one of the best explanations of entropy for people who don't have a physics background, with many philosophical notes.

    • @vincentdavis3453
      @vincentdavis3453 5 месяцев назад +9

      Not necessarily true. The best way to explain entropic systems is in the form of clocks, watches, and wind-up toys that run down and stop when the energy in their spring or their battery is spent. That's the effect of entropy. 😊

    • @jedcasillas5171
      @jedcasillas5171 4 месяца назад +1

      well even at the beginning he's already using symbols used in calculus and what not. You do have to have some background, at least from high school.

    • @Tystolfo
      @Tystolfo 3 месяца назад +4

      @@jedcasillas5171 I disagree, I'm dumb as bricks and I still came away more or less understanding what Entropy is now.

    • @pommebanane123
      @pommebanane123 2 месяца назад

      @@jedcasillas5171it was only a part of it, you could understand this video with or without calculus. You’d miss out on some mathematical details, but the premise is still clear.

    • @lastdevil4983
      @lastdevil4983 2 месяца назад

      Wtf. I wish I didn't understand this

  • @terapode
    @terapode 10 месяцев назад +378

    This is the kind of content that should be on TV. You deserve a PhD in eduation as well.

    • @macabreaztreonam
      @macabreaztreonam 10 месяцев назад +94

      His PhD is in physics education

    • @aarondavis8943
      @aarondavis8943 10 месяцев назад +27

      Don't give him ideas! The content is where it belongs; accessible to everyone for free and unfettered by the meddling hands of executives.

    • @engineerahmed7248
      @engineerahmed7248 10 месяцев назад

      PURE BS
      Incident solar energy is stored in earth as potential energy of petroleum & coal.
      Gravity crestes Ultra missive Black holes & their explosion is the big bang that creates universe & this process is the source of entropy reduction.

    • @manojlds
      @manojlds 10 месяцев назад +3

      Yeah I think he's being a bit vague with his PhD in this video, but it was actually in education. He's not what you will think of when someone says Physicist.

    • @madhououinkyoma
      @madhououinkyoma 10 месяцев назад +2

      @@manojlds I understand where you're coming from but his PhD was actually in Physics. "Physics Education Research" is only a research area of the Physics Department (just Google sydney university SUPER group). You still need to take graduate-level Physics courses for that as all the others Physics students. And a PhD in Education is not a thing in most universities. Just looked all this up myself.

  • @christosfountas3937
    @christosfountas3937 2 месяца назад

    Incredible work - this steals your attention for all the right reasons. Thank you so much!

  • @carlsoto1747
    @carlsoto1747 2 месяца назад +3

    Entropy is what makes the concept of our existence being a cosmic engine appealing to me

  • @simondelacanal4543
    @simondelacanal4543 10 месяцев назад +513

    I had 2 years of thermodynamics in highschool and understood more in a half hour yt video. Thank you Derek as always for posting such awesome content

    • @mosese2995
      @mosese2995 10 месяцев назад +7

      I am currently pursuing electrical engineering course and I have come across thermodynamic unit and is really awesome

    • @mimichalek
      @mimichalek 10 месяцев назад +7

      That's *likely* because a teenage brain is not equipped for abstract thought needed to grasp concepts such as entropy. That is, even if Derek was your secondary physics teacher, it's still more likely you would not have gotten the explanation of entropy.
      Science can be enjoyed more when you're past 20.

    • @piusadas2220
      @piusadas2220 10 месяцев назад +9

      ​@@shadewood3083exactly. im in first year of high school and our chemistry teacher is an absolute GOD. he explained all the concepts mentioned in the video to us during our thermodynamics lectures and the way he explains it is just beautiful. he's been teaching multiple classes since 2003, yet the gleam in his eyes when he explains second law of thermodynamics to us is incredibly inspiring. like he's been teaching THIS long and he's still like, "isn't science amazing?"

    • @diegoeliasindriago7991
      @diegoeliasindriago7991 10 месяцев назад +5

      @@mimichalek a teenage brain is only lacking development in the prefrontal cortex which regulates thoughts, actions and emotions... they are not dumb, just emotionally chaotic and bad at judging consequences

    • @zavatone
      @zavatone 10 месяцев назад

      But don't people know that heat through sunlight comes in from the sun during the day and radiates out to space at night? That answers the premise that he starts this video on.

  • @userunknown101
    @userunknown101 10 месяцев назад +146

    I thought I'd consumed enough physics content over the last 12+ years, to not have my mind blown again by any known fundamental physics. I was wrong. This not only blows my mind but immediately reframes how I've been thinking about energy, time and the lifespan of the universe. Thank you for being such a consistently amazing human being, who produces equally amazing content, for so many years.

    • @StevoSwiss
      @StevoSwiss 10 месяцев назад +1

      So nicely said. This video really helps sum up energy concepts in a way that create larger understanding. Following lengthy math, we sometimes forget what the core of some of those calculations stem from.

  • @vasilislemon7842
    @vasilislemon7842 Месяц назад +1

    Your best educational video so far! Absolutely stunning❤

  • @BanuprakashGovindarajan
    @BanuprakashGovindarajan 29 дней назад

    Thank for having wonderful experience with you, sir

  • @Thetarget1
    @Thetarget1 10 месяцев назад +598

    This video is a masterpiece. It´s by far the best explanation of entropy I´ve seen on youtube, going through the most important concepts in several semesters of physics, and it explains it both in simple layman´s terms, but also through the relevant equations, while giving them a graphical representation. It´s honestly really impressive science communication. And I love the old school Veritaseum interviews of random people, who express our own questions and confusion. Well done!

    • @Thea-Time-13th
      @Thea-Time-13th 10 месяцев назад +21

      ​@@feynman_QEDbut just right for those who know a little bit and are looking to learn more.

    • @Netsuki
      @Netsuki 10 месяцев назад +3

      I remember learning about entropy in middle school. I had no idea what it is. Why is "chaos" a thing in physics. This video actually explained it to me.

    • @kmesh9
      @kmesh9 10 месяцев назад +15

      ​​​​​@@feynman_QEDou have to be so boring and pedantic about it? In the world we live in not everyone should have deep and intimate understanding of every topic of science. Videos like this DO give actual knowledge to viewers, albeit on a surface level, but that surface level actually gives a lot of benefits. Specifically - widening persons world view, satisfying and at the same time encouraging very useful need for learning new things and also allowing person to engage in simple discussions about explained topics. It also definitely gives an ability to solve simple problems on this topic or explain it to someone else.
      There is rarely any need for an average Joe like me or you to know about topics like this in more detail, but if you would need it - videos like these are still useful because that surface level knowledge allows you to point yourself in the right direction for learning further.
      People being overconfident about their knowledge of topics have nothing to do with Popular Science, only with their own arrogance that they need to coreect themselves.

    • @lorenzocapaldo1733
      @lorenzocapaldo1733 10 месяцев назад

      @@feynman_QEDwhich books would you recommend to start studying physics, I am interested in doing so and I would like to know your opinions

    • @hell1942
      @hell1942 10 месяцев назад

      ​@@feynman_QEDwell I like being challenged by complicated ideas like these, dont really know what your suggesting, that they dumb down these videos, and oversimplify them to the point that they become inaccurate?

  • @colinburfeind6947
    @colinburfeind6947 10 месяцев назад +378

    This is easily one of the best pieces of content I’ve ever witnessed. Engineering thermodynamics 1 was a fun class and I had a great professor, but it left me still wondering what entropy really was. This video so elegantly explained entropy, important universal concepts, and the history behind the names we read in textbooks. Absolutely beautiful.

    • @cane870
      @cane870 10 месяцев назад

      Bro thermodynamics is not fun 🤣. Fluid mechanics is where it’s at

    • @cdutch513
      @cdutch513 10 месяцев назад

      I was thinking the same exact thing lol

    • @personal4528
      @personal4528 10 месяцев назад +1

      A few problems:
      1. Entropy has never been observed to reverse without deliberate intervention. This flies in the face of the ‘it can all happen itself given enough time and energy’ fallacy.
      2. 19:09 - This is an especially egregious case of pseudo-intellectualism. It is quite frankly shocking that it is included as a credible statement. Just because life (while living) is compatible with the second law of thermodynamics. It does not address the so-far unexplained way life as a complex orderly system can arise in the presence of the second law; which is expressly hostile to such complexity arising, and expressly favorable to it decaying.
      Yes, life helps dissipate heat energy. But nothing here has spoken to how this dissipation (entropy) is anything other than extremely hostile to the arising of complex orderly systems such as life.
      This is like saying: “since petrol makes a car run, petrol explains how a car was created”
      3. It is impossible that all energy from the sun is emitted back away from the earth. Some is converted into geological formations such as coal. And if you claim that that will get emitted one day when the earth explodes - then the entire question posed to the public at the start is ridiculously impractical.
      4. 23:50 -Celestial bodies break up all the time. Comets have been filmed breaking up in space.

    • @kgv5179
      @kgv5179 10 месяцев назад +1

      ​@@personal4528​1. Entropy has never been reversed for CLOSE systems. It's possible for it to reverse but as said in the video. The probability is next to 0.
      2. He was making a hypothesis that the 2nd law of thermodynamics maybe the cause of life. Now we don't know if it's cause and effect or just correlation.
      But including this in the video isn't a huge issue, might not be entirely correct but something to ponder about nonetheless.
      3. It was never stated that the energy is entirely emitted away from the earth. It was stated that Most of the energy is emitted/dispersed away from the earth while some is taken in to sustain life and other processes.
      4. Again, you need to listen properly, he said that celestial bodies break up all the time and the reverse isn't possible.
      I hope your doubts are cleared.

    • @personal4528
      @personal4528 10 месяцев назад +1

      @@kgv5179 1. no, read carefully: Entropy has NEVER been observed to reverse without deliberate intervention. Name a single observed, non-hypothetical instance of spontaneous entropy reversal without intervention from an designed method. Furthermore, the universe is a closed system. To say that the second law of thermodynamics does not permeate in a scalable manner across the universe is grade school level nonsense.
      2. No it was not a hypotheses. It was an ignorant conclusion based on no data, and should be derided as such.
      3. 17:17 he says the same amount gets emitted. Again false. Some becomes geological as coal.
      4. 23:55 "we never see... a planet unmix into the cloud of dust and gas that made it up" - false. Comets sublimate into nothing. Stars supernova. Decay is everywhere. This is a slight of hand to try make entropy the opposite of decay, when in fact it is the greatest facilitator of decay.

  • @mwilliamson8072
    @mwilliamson8072 Месяц назад

    Fabulously clear and understandable explanation of entropy. Thanks!

  • @shweta3098
    @shweta3098 2 месяца назад +1

    Ok, the definition was amazing, the entropy is a basic building block of my biochemistry class but it was hard to wrap the mond around then i thought why make live which is defying all these laws. The video helped a lot for me to explain it all, i have some new questions to think but its a good start 😅.
    Once again an amazing explanation for the concept. Before this what I studied of thermodynamics was just remembering bunch of equations and not understanding why i am even studying this subject.

  • @licnex
    @licnex 9 месяцев назад +215

    dude give the editor a raise, this might be one of the best videos you've ever made

    • @noorhassan6938
      @noorhassan6938 9 месяцев назад +4

      Agreed

    • @moonwalking1929
      @moonwalking1929 9 месяцев назад +12

      ​@@kwokshseeHe used plain language so everyone could understand.

    • @fog117
      @fog117 9 месяцев назад +9

      @@moonwalking1929it’s a bait comment

    • @kojicuxt
      @kojicuxt 9 месяцев назад +9

      @@kwokshsee riddle me this, kwokshsee. a solid material like my desk here has lower entropy than my coffee which is liquid. particles in my desk are surely more "clumped" than those in my coffee which are more "spread out".
      also i imagine you just being like umm actually 🤓entropy is higher when particles get more _freedom!_
      lmao, when particles or energy are more "spread out" they will be able to fill more space, making it "less predictable", at the same time giving it "more freedom" to move around compared to when particles are "clumped". guy making the video isn't wrong, you just like to sugarcoat your words. what are you on smh
      just let everyone enjoy science, man

    • @milosbar
      @milosbar 9 месяцев назад +2

      I know right! My jaw was on the floor for most of this video. Those shots, clips and animations were spectacular

  • @jakelangevin301
    @jakelangevin301 10 месяцев назад +184

    As a chemical engineer who has done massive amounts of thermodynamics, kinetics, and fluid dynamics this my friend is the best explanation of everything. You taught me things in an easier sense and you brought in all my favs from the boltzman constant to Carnot heat engine. Thanks:)

  • @valerienickel7394
    @valerienickel7394 2 месяца назад

    This is a wonderful explanation! I love all the diagrams and examples. From a high school chemistry teacher - THANK YOU!

  • @cahlendavidson2921
    @cahlendavidson2921 22 дня назад

    I love the tone of your channel. We treat people like they're stupid but I think this shows they're not

  • @sanshakuvakei9620
    @sanshakuvakei9620 10 месяцев назад +233

    This channel has become truly incredible over the past couple of years. It was always great, but the increased frequency of uploads and high production quality is amazing. Shout-out to the entire Veritasium team!

    • @erock7073
      @erock7073 10 месяцев назад +1

      It was always great, has only gotten better over the years!

    • @madhououinkyoma
      @madhououinkyoma 10 месяцев назад +1

      @@erock7073 So, what he said. 👍

  • @danerodriquez1358
    @danerodriquez1358 10 месяцев назад +214

    My God Derrick, this is one of your best videos yet. You’re the only content creator that I actively check to see if you have any new content. Your last few videos have been interesting, but this kind of extremely competently explained mind blowing content is some of your best work. You truly have a talent like no other.

    • @zumabbar
      @zumabbar 10 месяцев назад +2

      derrick

    • @verainsardana
      @verainsardana 10 месяцев назад

      After a few of his recent videos i thought he is done. But he surprised me with this amazing video

  • @divadivagar5025
    @divadivagar5025 2 месяца назад

    I never understood this entropy concept in school. Now I do because of you, thanks to you❤

  • @twyyyyy
    @twyyyyy Месяц назад +1

    I only studied physics in middle school for 1 year, and it never interested me at the time.
    This is SO fun to watch! I somehow feel greatfull to be alive haha.

  • @dan725
    @dan725 10 месяцев назад +315

    My god….. The way you explained the Kelvin scale was just so effortlessly intuitive, simple, yet insanely informative. You are an absolute treasure to humanity.

  • @MSmits-mh9dq
    @MSmits-mh9dq 9 месяцев назад +413

    I am a physicist myself, having been trained 20 years ago, this video was interesting and helped me brush up the concept of entropy. It's all well and good to understand the math, but having it illustrated the way it is in this video is very useful. Thank you.

    • @skydyverjym
      @skydyverjym 9 месяцев назад

      But it's so elementary. This is below basic

    • @coolaidmedic5553
      @coolaidmedic5553 9 месяцев назад +26

      @@skydyverjym Thanks Mr D. Kruger. Just because Veritasium broke it down for you on a low level doesn't mean you understand. Why dont you tell us how Sgen (kJ/K) = dQ/T was derived?

    • @Milesco
      @Milesco 9 месяцев назад +5

      ​@@coolaidmedic5553 "Mr. D. Kruger" 😄👍

    • @aduts1177
      @aduts1177 9 месяцев назад +1

      what do you guys research about?why you cant discover anything significant since einstein?What did you do in the past 20 years?

    • @ValeBridges
      @ValeBridges 9 месяцев назад +13

      @@aduts1177 Jesse, what the hell are you talking about?

  • @rudycramer225
    @rudycramer225 2 месяца назад

    This is the best explanation of entropy I have seen. And I know bugger all about physics. The spreading of energy through the universe will do me.

  • @henriquealexandreh
    @henriquealexandreh Месяц назад

    Most beautiful science video I’ve ever watched!
    I feel blessed to have the opportunity to learning this way.
    Thanks a ton!

  • @nickmoore9843
    @nickmoore9843 10 месяцев назад +124

    “Let’s make use of the low entropy we’ve got, while we can.” 👏👏👏 Great line.