What is entropy? - Jeff Phillips
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- Опубликовано: 1 июн 2024
- View full lesson: ed.ted.com/lessons/what-is-ent...
There’s a concept that’s crucial to chemistry and physics. It helps explain why physical processes go one way and not the other: why ice melts, why cream spreads in coffee, why air leaks out of a punctured tire. It’s entropy, and it’s notoriously difficult to wrap our heads around. Jeff Phillips gives a crash course on entropy.
Lesson by Jeff Phillips, animation by Provincia Studio.
Mom: "Why is your room so messy?"
Me: "It's not me, its entropy"
What's this? An actual good example.
ITS NOT AN EXPLANATION
-Lucy- -He- entropy can be also describe as a process of order to disorder. like a brick wall, their are many ways to break it but only one way to fix it
Yes, this the reason why its easy to break than to fix, why we go towards higher entropy.
No you aren't. The energy you use to tend to the garden ultimately becomes warmth and dissipates. The energy making those plants grow comes from the sun, which is burning up to do so.
Entropy is everywhere, even in our daily life. We don't realize it.
For example, there are two libraries A and B. Both these libraries contain exactly the same number of books. All the titles available in library A are available in library B as well. Imagine that library A is well stacked and library B is just a huge pile of books and all the books are just dumped.
As per the first law of thermodynamics, both these libraries are equal, (energy is conserved). But anyone who wants to take a book and do some reading will prefer library A only, which is well stacked and ordered ( Less entropy).
Library A has less entropy and more order. While B has higher entropy and less order. We need to spend energy to bring it to order.
So basically entropy is a measure of disorder or randomness. Higher the disorder higher the entropy. We cannot measure/calculate entropy for all the process or in other words it is very difficult to measure the entropy for some processes. There are equations for some standard engineering and chemical processes to calculate entropy.
If entropy associated with a process is very high, the process tends to have low efficiency.
Ref: Thermodynamics : An engineering approach. Y A Cengel
Nice
Really Noice I luv yer explanation mayt
Was that mean you can make something from lower entropy to higher but harder when Its opposite or almost impossible ?
Thanks what is thermodynamics
Yes but it's also very easy to make a mess in library A. Which should be the priority if entropy always increases.
Low entropy=enegry concentrated
High entropy=enrgy spreads out
They're the two things i can only understand -,-
And energy tends to spread out if there is a chance :)
Thank you for sharing this knowledge
U are confusing people more. STOP
ruclips.net/video/vX_WLrcgikc/видео.html This one might help.
If that summarizes the point to the satisfaction of the presenter and is accurate, then it's vastly clearer.
Jeff Philips: "The chances that the icewater will make the coffe warmer are 0,0000000000003."
Me: "So you're telling me there is a chance!"
Jeff Philips: "You did not understand one word in this entire video did you?"
Me: "Not a single word."
a verified RUclipsr get low likes 😂
Indeed, there is a chance.
With that same thinking theres a chance that you can just spontaneosly combust
Even there's a chance of your laundry will come out folded nicely from laundry machine
@@bobbib4627 hahahaha yes a 10^(-300) chance
I thought I was confused before. I definitely am now
Thomas Jose I don't understand, maybe bcs I'm not good at science but I still love to watch this before sleep
Science does that to you.
science the study of having more questions when you finished then when you started
same xD
I'm twice as confused bc that's not even in my native language.
Is it just me or did yall brains take a vacation while your eyes and ears worked so hard to understand what he is saying?
Is the Universe going to end??
Here's the answer for the mystery: ruclips.net/video/pKGhC2GKpm8/видео.html
That’s what happened
I watched this a year ago for my thermodynamics course and didn't understand any of it. Just watched it again and it made A LOT more sense. Just come back in a year dawg
Well , I turned on captions..😎😎
Yah
"Don't try to understand it. Feel it."
Grok it
Spread your brain on a table, it will help
@@hellohello-fs7we What? What does that mean? Tenet was an amazing movie!
?
What are we talking about?
I think this was the best explanation of entropy I've seen. I always hated when professors described it as disorder to me because that begs the question, 'well what is disorder?' That is why I am always so careful to describe the statistics of entropy to my first year chemistry students. My one suggestion for your video would be to talk about translational entropy instead of vibrational/rotational energy because students tend to have a very difficult time conceptualizing bond energy unless you explicitly describe it in more detail than just stored energy, whereas kinetic energy is more intuitive for them.
Yes, as a student chemist, entropy has always been a term I felt acted as a barrier to understanding the fundamentals. This is definitely the quickest explanation where I thought it was done well, but some books explain it very well as well
@@RongSpelingz hey, could you text the name of the books?
True
"I think this was the best explanation of entropy I've seen. I always hated when professors described it as disorder to me because that begs the question, 'well what is disorder?'"
That has always been a bad definition to me also. "Disorder" is both subjective and even if it is disorder... we need another explanation about what disorder is. Leading us further and further away from understanding entropy.
It is, though tbh I wouldn’t know if it’s better than my teachers explaining it… I didn’t pay attention in high school lol.
The other comments are hilarious though
First 10 seconds: yes, indeed.
Rest of the video: 😐
SKRsoul 🤣🤣
Is the Universe going to end??
Here's the answer for the mystery: ruclips.net/video/pKGhC2GKpm8/видео.html
@@miltonjohn9731 cold death inevitable due to entropy
same here
honestlyyy lmaoo i had so much hope
I took an off day today at work to relax myself then this recommended video appeared. I got more stressed and confused as ever. I am in high entropy.
Yeah, you are in low entropy.
more like low entropy
@@ockertoustesizem1234 no it's high actually? The more the disorder... The more is the entropy
I’d you’re in high entropy that means your energy is spread equally. Which means your desorden or randomness is high. Low entropy would mean you’re energy is concentrated., so your randomness is low
"Entropy is the direct measure of each energy configuration's probability..."
This is the most exact and best explanation I have ever heard.
It immediately clicked once you said that. Thanks 😊
Not a measure of energy configurations at all. When Clausius defined entropy as the sum of infinitesimal changes in heat at temperature T, he was talking specifically about heat as a macro quantity. Entropy is a mathematical statement of the 2nd law of thermodynamics which determines the direction of heat transfer in a process. If the process is reversible, entropy is zero and if irreversible, entropy is positive.
Simple stuff, actually.
Entropy✔️
Next search "Temporal pincer movement"
AHAJAHJHAHAAHAHHAAJ
Lol Nolan likes to mess with your brain all the time
@Suprith Closed system? No. Otherwise - yes. Your refrigerator does it all the time. Oh and it doesn't go back in time, sorry.
We live in a twilight world
@@zamirz8456 no friends at dusk?
Good animation. Good pronunciation. By the way, what are you talking about? 😂
searched for "entropy explained in simple terms"
*literally 1 minute later:* LETS TALK ABOUT QUANTUM PHYSICS
Man. That's hillarious! 🤣🤣
Hahahaha
this explanation need explanation
Now I know how my dog feels when he sees me watching television from day to night.
Dude just goes Saiyan after learning about Entropy.
That's one strategy to make kids learn physics...
true story
Nahh, he's regenerating.
@@cubeandcollect "I don't want to go"
@@goldsrcorsource2551 😢
This is by far the best explanation of entropy I’ve ever seen. I’ve been trying to understand the complex concept for a while now and now I finally get it! Science seems to have an endless list of awesome concepts doesn’t it?
Explain it in simple terms
Can you explain it in a more simple way ?
@@bigboijoni4328 this is as simple as it gets for entropy
No tf it’s not
@@bigboijoni4328 Entropy means deconcentration of energy, due to the extremely unlikelyhood of energy remaining concentrated we get the principle that, with time, entropy will increase. Hence energy will spread.
Christopher Nolan: "Yes, but what if it's REVERSED though??"
@@miltonjohn9731 No
I read a joke when I was in the university about a professor who gave the same question for decades in exams asking pupils to define entropy. Several years later a colleague questioned why he was repeating the said question. The professor replied that although the question about entropy is same all the time I simply change the answer! This video is an excellent example of how confusing entropy can get.
Its funny 🤣🤣🤣
Ok that would is equally as funny as it would be mildly infuriating.
I heard it was Einstein and the exam was about general relativity or something like that.
He would give the same questions. When other professors asked him to change his questions, he said answers are always changing.
It's not that he's changing the answers, it's the scientific discoveries.
Without science changing the answers, one professor cannot have different answers to the same question.
So you're saying there's a chance?
There are more chance for a hot cup gets hotter in front of a ice than me getting a girlfriend
nothing is impossible in nature
The thing is, even if the unlikely happens once, you're still rolling that metaphysical quintillion-sided dice over and over again and the next shift in energy is still more likely to spread out again than otherwise. So you probably will never have to worry about your coffee getting hotter on its own or the mug exploding at random.
@@LevyWillianOliveira there is more chance for your food to get more warmer than you winning a lottery
If you look at the glass of ice in its small scale, you’ll probably observe that some of the “units” are getting some energy here and there, thus getting hotter in some places counter intuitively, but as you look at the bigger picture, that gets negligeable, and in the long term it will cool. Also it would need to happen repeatedly in order to cool down, since its a continuous process. Another thing to take account is that in the macro world it might have no chance to happen, since when reaching a certain amount of factors the thing gets too defined to act otherwise, for example kicking a ball: there might be a chance for some energy to spread more to the right or to the left of the ball, but actual no chance for the compound to move in the opposite direction, the chances might just be zero for that, since all thought there could be a set of possibilities, that set is not infinite, rather limited. The conclusion is that in nature, not anything can happen, a defined amount of things in a point in time can happen, of which I wonder a lot about its actual nature and functioning, real randomness etc.
These are just some of my thoughts, hope to give insight not certainty.
This is an absolute beauty. We can actually apply the permutations and combinations we learn in high school for finding the number of microstates of a particular energy configuration, which is mind blowing. This is a video worth spending time on. Kudos to the presenter.
And it became much more clearer when they related energy and entropy. I particularly upvote the statement
Low entropy = More concentration of energy
nice name
We are quite blessed to have information like this so easily available
just imagine this; you're sitting at your desk or something and your dinnner just starts to burn..... lol
Everyone: WHAT HAPPENED?!
The uncle that is a scientist: Well this has a chance in 0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001% of happening, and to answer why, we need to talk about entropy;
Lol
if only you have a dinner at the lava lake
Frog whell, even though there is Indeed a very low chance. But a chance non the less.
@Frog
But first, we need to talk about parallel universes.
what I understood is
Low S= energy is concentrated
High S= Energy is spread out
It's basically the reversible heat provided divided by a fixed temp
Basically it is law of large numbers but for energy
It basically just works
Check Out our Video on Entropy!!
ruclips.net/video/pKGhC2GKpm8/видео.html
It not whole truth
"Entropy and Negentropy" words I didn't knew existed until I discovered Day6
day6 teaching us physics better than school lmao
Hello fellow MyDay hihi
hi fellow Myday :D
as a science student and a myday, i was fascinated with day6 using such terms
not myday (yet) but i like their songs hehe and the fact that they use science in the album titles
I’ve never seen such a short yet good video on a complicated subject, well done :)
"All I have for you is a word...... T E N E T "
AYYYYYYYYYYYY
Coupled with a gesture.
@@johancakep It'll open the right doors. But, some of the wrong ones too...
Oh boyyyyyyy XDDD
My man
My brain broke. It broke. IT BrOke. ît brøkę. ItTt BröKkëE
Deric D 😂
your broken brain is an entropy!
Deric D
If it ain't Baroque, don't fix it.
I know it is in English but I can't listen to it. I hear Ommmmmm. or is it beepppp. lol
if you read a book instead of taking pictures without a shirt, maybe you wouldnt be so stupid
You will appreciate the power of reading comments when topics like this are discussed...
Okay- this literally doesn't help me with anything in school and it's not something I need to learn- but it's so calming 😌 I could literally watch it all day 😃
For real
I feel like this was explained well, but my brain is just too puny to grasp it.
The again, I have no idea since I still don't get what it is…
Just watch it again and focus. It's a matter of concentration
I feel the same
This might help you aatishb.com/entropy/
I also feel the same thing
Brilliant explanation! I don't understand why there are so many people in the comments that claim that this was poorly explained. It made perfect sense to me, I'm sure there are people that agree.
Because everyone expected more "relatable", less scientific way of explanation.
Vincent de Beer i concur doctor. indeed
people in RUclips are hopeless. they tend to be a lazy reader
I agree. This video was brilliant, and delivered a simple conclusion with facts that really made me awestruck. I fucking love this video so much.
I agree.
Thank you! This made the concept better cemented in my mind. Great concept came with great animation!
Goodness…I watched so many videos on entropy by far this is the best. Concept on entropy is 100% clear now. Thank you❤❤❤
This narrator is my favorite! I love the way he speaks. His speech is slow and understandable. 👍
So the chance of people I hate spontaneously combusting is smaller than I thought. Bummer.
That was really good. I appreciate humor that requires a very sophisticated understanding of the topic. Thanks.
Nah bro it's only like 0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001% chance
actually it isnt, if you really want it to happen
木星からの脱出 but it’s not 0
People have spontaneously combusted before and the chance is higher if you are an alcoholic
en.wikipedia.org/wiki/Spontaneous_human_combustion
"We live in a twilight world. There are no friends at dusk."
Very well put explanation. But to sum up this video for anyone who finds this.
Entropy: A term of thermodynamics that (in laments terms) talks about the statistical probability of energy dispersion (and does it in some incredibly confusing ways). I’ve gotten this questions as well, it isn’t a force or aspect like gravity in physics, like this video said entropy is just what we use to describe things, it itself doesn’t do anything.
Thank God someone took the time for explaining this. This makes so much sense. When people said entropy is from order to disorder, it never made sense to me.. Cuz how do you define order?
“What is Entropy: a guide for PhD physicists”
This is the comment I was looking for.
Thermodynamics:
"Am I a joke to you!?"
Thermodynamics:
"Am I a joke to you!?"
This isn’t even a mathematically rigorous definition of entropy. Don’t pretend he just explained special relativity.
Its not as complex as you put it, there are no complex maths or advanced concepts involved (in this video).
This is such a great overview of thermodynamics/statistical mechanics
This was a very good explanation. Entropy is a measure of uncertainty related to a random variable or message in information theory. Entropy is correlated with the quantity of messages or outcomes that a system is capable of producing, and as the quantity of messages or outcomes grows, so does the entropy.
4:50 every time I finish a TED video
😄
I had a really bad day today but your comment made me laugh. Thank you.
Yes! 😂
stonks.
You become a super saiyan? 😂
Now i have an excuse for the mess that is my desk
That is I, indeed.
Abhijeet Pitumbur
nice self advertising there, mate :)
No advertising here please. These comments are supposed to be funny and brighten people's day!
Abhijeet Pitumbur
Lol
Hey dude
Excellent explanation. Thanks for the insightful video.
beautiful explanation ever. i became excited once i understood this concept and ran away to increase my entropy due to the increase in energy in me duiring excitation.
It's one of the most difficult topics I encountered while studying physics, and the way you explained it here made me understand it so well, thank you so much! Sure there's way more to say about it, but for a first approach, it was GREAT! Keep up the good work, keep educating the world, it's amazing! :)
I just clicked the video to see how good you can explain it :D
I think it's the best explination i've seen so far.
same
Brilliant explaination
Best in the world.
I was doing my assignment on entropy and came to RUclips for suggestions. And, this was on my suggestions list before even I looked for it😂😂 thanks Ted Ed!! 😊
THANKS ! i learned a lot from your publications ! good work and good luck for the coming
At times, I come back to videos like this to again ponder fundamental questions I already had answered. And THIS one was absolutely beautiful. Thanks a lot!
Thank you for making this so much clearer. Most videos say entropy happens "just cause" whereas you actually explain how and why.
Thanks for this. Interesting topic. I need to listen to it again to get my head round it.
The first explanation of entropy that I actually understood. Thank you.
Tenet gang, where ya at?
Here here! 😂
I watched the film 20 days ago. But I'm still in awe.
@@dreamer2356 Same I watched it when it came out. Can't wait to see it for the first time!!
@@adequatequality Ikr 😄
ereh thgiR
This is the most comprehensive explanation of entropy I have ever found. Neither my chemistry teacher nor the textbook explained it so thoroughly and with such clarity. Instead of the usual complicated explanation, your way of defining it as the redistribution of energy along the atomic bonds in a dynamic system is so much simpler. I really appreciate this video.
Why did I find it not so easy to understand 😅
@@ahlamamr4659 study basic physics in science
I'm almost 75 and my brain is suffering from entropy. Just like air leaking from a hole in a tire, knowledge and memory are leaking from my brain, and strength is leaking from my muscles. Ah to be young again.
This is life my friend 😀
And I’m 82 still pouring new stuff into my brain and you are, too-that’s why you watched this video. Entropy is not a mental disease…..cheer up!
Look out for magic mushrooms and neurogenesis
8 years of living in darkness, this video lighted it up.
have you ever seen a comment and thought "I wish I wrote that"
I am in a state of shock Just happened to me with your comment.
I am in a state of shock Yes 'cause then you get likes. 🐸
Nice copy-paste
Rismosch I wish I wrote that
Jasmin Sultana I wish I wrote that
Maybe she's born with it, maybe it's entropy
You're a comic genius 😂
Great video! Very clear explanation
You guys have the best topics and the best explanation
So violation of 2nd law is improbable not impossible
That means that 2nd law of thermodynamics in not a law it is statistics.
I should have more research on this.
It's a statistical law.
Depends - how many zeros does the probability percentage need to be considered impossible? :)
It’s impossible to do on purpose.
Yes i recently read a article where scientists observed a disordered set of quantum states going back to ordered state violating 2nd law
This is the best explanation about entropy meant for the laymen I've ever seen! Kudos! 👍👌👍👌
L Galicki I agree.
L Galicki Band this vudeo gives me another reason to hate and lovr quantum.mechanics more
Beautiful description of entropy.
Yet I wonder, could we experimentally verify the change of entropy for unlikely processes?
For example 1 molecule and see if it will heat up spontaneously? While the other will cool down.
One of the very few easy explanations of entropy out there
Entropy is literally one of my main ways of thinking and evaluating about life. I didn’t even know it.
Check Out our Video on Entropy!!
ruclips.net/video/pKGhC2GKpm8/видео.html
13 13 never sea every see sail away nervous watch me beliefs but before you go i got too we am i alone or is this just me ill hold my tongue as these breath our leased say that again airs waisted left us just be repeat d-q p-b get it teddy QXVII
@@miltonjohn9731 yep
Entropy is a measure of the amount of energy in a physical system that cannot be used to do work
Why can't it be used
@@thatcoffeefeel8 because it is unordered energy.
Divyansh Verma: Excellent. I prefer your explanation.
@Dr Deuteron It's not. OP is SOMEWHAT wrong, Entropy is measured in Joules per Kelvin, that alone tells you its not a measure of energy. That being said, it can be argued that it is PROPORTIONAL to the energy that can't be used... Its complicated and I would have to look through my thermodynamics notes to verify
What is this, high school physics? OP did a great job over-simplifying entropy, basically telling untruths to make people believe they understand.
Im normally a very confused person, and yet somehow I find that after this video I’m not confused at all 😭 this actually helped me understand the basis of thermodynamics!! Tysm
" If You can't Explain it Simply, You don't have understood it well Enough. "
Richard Feynman 😀
“You don’t have understand it well Enough” okay buddy
I haven't understood yet
Maybe the fault is this is a prerecorded video and you can takeyour time going over the various sections of the talk
einstein
Probably the best, must succinct elucidation of how entropy functions that I've ever seen. Thank you for the insight. :)
See Brian Cox from the BBC explaining it, too, just excellent.
This comment section:
50%-THIS MAKES NO SENSE
40%- I can understand this with my superior intellect so I shall share my knolage and scientific theory with you.
10%- heyyyyy madoka magica fans! Who wants a contract?
😂
Hey, you! Yeah, you! Wanna make a contract?!!!
Now:
Almost all comments:
"TeNeT"
1%-TENET
5% tenet gang
Beautifully explained ❣️
They were trying to make it simpler for us but everything they said made less and less sense and became more complicated lmao
I specifically came here to understand Entropy since some speculate that it's going to be main concept in "Tenet" , Turns out its explained clearly here ( I rewinded and play it a few times though )
Really really great explanation! Thanks a ton!
Great explanation. Better than any others
Great explaining! I got the basic concept
It's so useful when scientific concepts are illustrated!
Now I understand entropy better than before. Thanks!
I'm watching this video for the third time now. Each time I watch it, I get it. But the concept evaporates from my mind with time.
Physics : "we explain why phenomena occur!"
Statistics : "excuse me?"
@@fscarp damn, ur right, so i guess it explains how instead of why?
I appreciate the effort taken by this person to explain entropy
Peace...
"Madoka...do you know the word 'entropy'?"
Gratio I see you're a magical girl of culture as well
Contract anybody?
Madoka, lika most of us, probably had absolutely no idea of what entropy was.
Been waiting for this comment.
Didn't expect a PMMM reference in a TED video
this is incredibley helpful. I was tired of people describing what entropy looks like and does without describing why, it all boils down to math just like most things haha
Great Insight!!!
At 4:48 , it went full interstellar.
Thank you, DAY6. My curiousity sparks more bcs of your album.
Because this concept is so complicated to grasp I accepted the notion that entropy is the measurable tendency systems have to find stability. Without in-depth knowledge of hard physics this is a something my tiny brain can comprehend.
Thank you very much for your efforts.
Entropy: *exist*
Christopher Nolan: Hi, have you seen *Time* ?
Entropy: I am her arrow.
Christopher Nolan: Nice, I guess I will use you too then.
Check Out our Video on Entropy!!
ruclips.net/video/pKGhC2GKpm8/видео.html
loved that movie!
Wow thank you very much for the great explaination!!
Thank you Jeff!
4:11 So you're telling me there's a chance
Yes, there is a chance, it is not impossible.
@@AnimMouse but the chance is so absurdly small it might as well be impossible
Yes, but actually no
@@pranavavva2649 Realistically, yes, ideally, no.
He considered only 6000 atoms system
Real systems have just more atoms and chance for hot object to remain hot is approximately equal to zero
4:22 “chance of an object...getting hotter” This sounds like an explanation for spontaneous human combustion
I thought exactly the same thing.
This is a great video. Thank you for this
what an easy brilliant explanation.
Dear sir, can you please reply, how you calculated 9702 microstates with 6:2 configuration in two solids.??
I don't' understand that too. Is there a contraints here?
So what you're telling me is that if I shot a bullet, there is a chance all the energy from it will go into the air, the bullet will just stop mid flight and create a gust of wind?
Achievement acquired : Air bending discovered
Yea good luck
Well if you succeed, remember to gimme a call, see you in 10^10^10 years
Lmao 🤣
the bullet go backward now. Check tenet 🤣
Check Out our Video on Entropy!!
ruclips.net/video/pKGhC2GKpm8/видео.html
so a 5 min video cleared out my misconceptions, and thats what i love about teded
Very Good explanation, I have subscribed
This is incredibly profound.
...and I'm still trying to wrap my head around it.
Larios Photography Translation I don’t get it😜