Real Engineer reacts to Technology in Dr. Stone #14

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  • Опубликовано: 4 фев 2025

Комментарии • 131

  • @TendernessLord
    @TendernessLord 4 года назад +467

    "I don't know how he's doing all that math in his head."
    The dude literally counted every second for 3700 years

    • @OminousSoul
      @OminousSoul 4 года назад +45

      Indeed. In the Manga he basically shows himself at later points as having become a human super computer when it comes to number due to all that counting.

    • @daimonji632
      @daimonji632 4 года назад +3

      This is like someone who just Known his name when he turned 69...

    • @gouki1522
      @gouki1522 4 года назад +19

      OminousSoul So he became smarter? So counting and staying conscious while petrified was sort of like a brain training exercise which made him better at arithmetic? I better try that.

    • @roran0432
      @roran0432 4 года назад +20

      GOUKI 天 That is quite likely. I mean in a very shirt time he surpassed the numbers that take him less than/one second to „think“, so by that point he had to acount for that extra time and add numbers to the end result. And just being able to count that high without a mistake or forgetting if you were at 1536735542515960357 or 1536735542515960356 is quite the task, which definitly would have improved his arithmetic skills

    • @kazemizu
      @kazemizu 4 года назад +2

      Well, some people are capable of doing that.

  • @Mikelaxo
    @Mikelaxo 4 года назад +339

    "Let's just trust Senku on that one"
    That's me pretty much the entire show assuming that everything he does is legit

    • @parychahal
      @parychahal  4 года назад +49

      LOL

    • @theflare9557
      @theflare9557 4 года назад +13

      He said the ignition point of paper(his reference for ignition of fabric) was 300 Celsius according to the subtitles. (WRONG)
      -
      Also said that 1300~ watts of sunlight on a 5cm diameter was near 1.3 kilojoules of thermal energy; assuming the tears had a density of 900kg per cubic meter.
      (CORRECT-ish{he assumes tears = pure water and doesn’t give an exact number on the amount of energy})
      -
      Hey, but I’m just a High School dropout.

    • @theflare9557
      @theflare9557 4 года назад +8

      Also the animation showed an ignition within

    • @adarshsaurabh7871
      @adarshsaurabh7871 4 года назад +10

      @@theflare9557 that's not that simple you know
      Water , tears , and every thing have their different refractive index and it depends on that too plus the day is bright and as we know lenses used for seeing purposes don't have much curves and therefore they can't hold much water and after some time in the sun it should have started to evaporate further changing the focal point plus the equations are not totally correct

  • @flavihok
    @flavihok 4 года назад +267

    "that ... will... work uh..." the moment you admit something but at the same time you don't want to lmao

    • @OtakuJuanma2
      @OtakuJuanma2 4 года назад +47

      That's the reaction of something that is possible, but so absurdly impractical you can't fully admit it.

    • @WhiteFireTheDragon
      @WhiteFireTheDragon 4 года назад +11

      I was surprised to discover that it is actually possible to turn a concave into a convex by sweating and crying.

    • @hiepdoshin7846
      @hiepdoshin7846 Год назад +2

      Our physic teacher explained it like this: going by the textbook definition, any block of transparent matter shaped like a len is a len. So when you pour water inside a concave len, you are effective creating a second convex len. When the light goes through both lens, the effect cancel each other out, but the convex effect comes out on top.

  • @baltoy7460
    @baltoy7460 4 года назад +243

    At the time the episode aired someone on Reddit did the maths of the last scene and found out it was 60 second straight. Don't know if it's legit btw.

    • @parychahal
      @parychahal  4 года назад +77

      I've never seen the equations Senku used and they don't look fun either lol

    • @HamsterBaddy
      @HamsterBaddy 4 года назад +25

      @@parychahal I tried to figure out what the hell all of that means where you have to put in what. Not even my aunt with a doctor in physics could help me.
      I (and my Cousin) still want to know how this works exactly

    • @mast3rbang
      @mast3rbang 4 года назад +14

      @@HamsterBaddy you can claculate it by diameter of lens, power of lens, energy density of sunlight on a sunny day, how much heat fur absorbs per second, heat capacity (or idk if it's called something else, it's too long since i studied) and average ignition point of fur.
      All the equations for the calculation can be found in grade 12 physics and chemistry books. Nothing difficult. Aside from the calculation.

    • @mast3rbang
      @mast3rbang 4 года назад +4

      @@HamsterBaddy not sure if it's actually called heat capacity.
      Here i'm talking about the constant which defines how much heat a material can absorb at a specific temperature. Though it's called a constant but it varies According to temperature.

    • @mast3rbang
      @mast3rbang 4 года назад +2

      @@HamsterBaddy you can now look for the rest or tell your aunt about it. I guess she can calculate it with these hints atleast.

  • @BidwellRunner
    @BidwellRunner 4 года назад +12

    Senku has probably been doing mental math to pass the time for 3,000 years. I'm surprised he hasn't dropped a solution to the Collatz Conjecture.

  • @monkweirdo
    @monkweirdo 4 года назад +6

    Not just caffeine, but probably also the placebo effect from what he percieves as "magic energy potion" :D

    • @princes428
      @princes428 4 года назад +1

      I also perceived it as he went into flight or fight and then after rest and digest

  • @zidanedwikholiq7498
    @zidanedwikholiq7498 4 года назад +54

    The next episode is completely amazing, please react to that too

  • @රෙසාද්_ඉන්දිප_04

    Please do an another video on Arc reactor technology with more advanced concepts and information. Love your videos and you truly deserve more attention!

    • @parychahal
      @parychahal  4 года назад +3

      I'll add it to the list! Thanks for the love bro! I appreciate the compliment!

  • @Kyuubi9N
    @Kyuubi9N 4 года назад +3

    This video was very informative! Thank you

  • @Rizwaan122
    @Rizwaan122 4 года назад +34

    Well I saw a vid where the creators (the animators I think) said they actually went out and did most of the stuff in the show, like they built most of the stuff to help them be able to understand how to draw it, so I'm gonna go ahead and say that there's not a lot in the show which is inaccurate

  • @exoticcats6119
    @exoticcats6119 4 года назад +55

    Someone had to do this math at some point wow some things aren’t for lazy people like me

  • @name1ess223
    @name1ess223 4 года назад +16

    oh great, the solar transfer rate, the thing i was most looking forward to from this series is essentially skipped lol

  • @presentrevenant5506
    @presentrevenant5506 4 года назад +17

    Watch more please. This is an amazing anime to the end of the season!

  • @vahyn
    @vahyn 4 года назад +1

    Nice video ! I like so much Dr. Stone and your explonatins

  • @LunaProtege
    @LunaProtege 4 года назад +3

    Very useful information on caffeine... It may explain why I have a constantly high metabolism... And by extension, why I seem to need a fair bit of sugar just to keep up with the effects of the caffeine.
    ... The one time I switched to a soft-drink without caffeine, I could barely stomach drinking as much of it as I would drink a more caffeinated soft drink.

  • @Dave-sk9mn
    @Dave-sk9mn 4 года назад +5

    come on dude, Senku counted 3000 years in his head.
    I think he's a step above everyone on maths

  • @zeph0shade
    @zeph0shade 4 года назад +2

    Honestly the fact that Senku's intelligence is one of the least believable parts of the show is one of the things I love so much about it. There's no need to even think about checking his math or anything, it may or may not be actually correct it's just there to be a demonstration of how stupidly smart he is, which is the plot's excuse for why one person can have such extensive knowledge in so many areas of science at once.

  • @derisis13
    @derisis13 4 года назад +3

    There are concave and convex glasses depending on the distortion of the lenses in your eyes.
    Mines are convex, but I never managed to find the focal point of them, nor to start a fire (though I didn't really try...)

  • @raunakkmajumder6868
    @raunakkmajumder6868 4 года назад +58

    Series-wise it's average, knowledge-wise it's an amazing series

    • @sangwiny4440
      @sangwiny4440 4 года назад +7

      No kidding. It could've been a top tier show if they eased up on the shounen tropes and overdone jokes.

    • @Loid_F
      @Loid_F 4 года назад +52

      @@sangwiny4440 and that would negate the best purpose of this show. for engineers and other scientiest's this show is like a funny snack, while for childrin and in general for young ppl this series can wake a massive interest in science by combining the accurate science with the shounen elements.

    • @maharanient6636
      @maharanient6636 4 года назад +4

      Woops, statistics prove that series-wise it isn't average. It's currently one of leading series of Shounen Jump, which is leading magazine in the entire manga community. And the anime announced S2 in the last episode, hinting that S1 was a blast.

    • @aeg9322
      @aeg9322 4 года назад +3

      @@maharanient6636 i totally agree, one of the top tier anime in 2019

    • @TNTspaz
      @TNTspaz 4 года назад

      @@maharanient6636 I think hes talking less numbers and more the fact it's really troupey and overdone. When the author could pretty self evidently write much better stories and jokes outside the science.

  • @lugardo30
    @lugardo30 4 года назад +4

    Very informational, please keep 10 mins

  • @djpagla1294
    @djpagla1294 4 года назад

    This series is great you are very knowledgeable

  • @para9938
    @para9938 4 года назад +6

    Interesting fact, for some people neuroatypical in a certain way (it's at least my case) tranquilizing substances tend to not work that well, while stimulants like caffeine calm us down.
    I'm not sure of the science behind this and I don't think there is a consensus, but obviously like any neurotype it is because something in the brain function differently. (I think it is more common for the types that cause hyperactivity, which is my case, I think about several things at once all the time, unless I think deeply about a complicated thing. But it's not the case for all people that have hyperactivity).

    • @cosmoniums5990
      @cosmoniums5990 4 года назад +1

      Harbinger of Hentai an explanation is in order:
      From my own personal research ADHD results from a lower amount of neurotransmitters in the brain causing them to react more frequently or powerfully in order to maintain a state of equilibrium (causing both a lack of focus and hyperfocus). Thus stimulants help by stimulating the brains neurotransmitters and helping maintain an equilibrium.

  • @hiepdoshin7846
    @hiepdoshin7846 Год назад

    The Kinro match might be kinda light on the science, but it was still awesome. So I am kinda sad that you skipped that.

  • @cubemage3336
    @cubemage3336 4 года назад +1

    9:28 I'm not really an expert on optics either. But I DID have to look into optics for the med school entrance exams, and the equations were legit. But it would take longer than 60 seconds (although not by much). Sweat isn't pure water and due to the minerals in it, the fraction index would differ from that of water, meaning sweat is "denser" than water.
    EDIT: think of it this way. which is better at magnifying? Glass or soap bubbles?

  • @aldrinugroho5727
    @aldrinugroho5727 4 года назад +2

    this episode is nutss

  • @shadowmaster335
    @shadowmaster335 4 года назад +1

    so to put it in lamans terms, caffaine acts like a dam for the molycules that normally keeps you calm etc, and when that dam breaks, your body experiences a tidal flood that makes you hella tired

  • @matiaspereyra9392
    @matiaspereyra9392 4 года назад

    9:11 almost as if someone had written the numbers to be exactly a minute

  • @PrometheusEpimetheus
    @PrometheusEpimetheus 4 года назад +3

    Yeah... Introducing caffeine to someone with basically cavemenesque physiology sounds like a hell of a drug.

  • @cyrilbenjamin6929
    @cyrilbenjamin6929 4 года назад

    the lens used by Suika is biconcave, right?
    so how does filling with water on one side make the other side concentrate light?

  • @e.q.8681
    @e.q.8681 4 года назад

    I'm curious about this: I drink my coffee black however I don't crash. I understand that my body will eventually start to go into the normal adenosine process to calm my body down, but without sugar or other additions to the caffeine, how long does this take?

  • @BlastOffer
    @BlastOffer 3 года назад

    Me watching this video after drinking 2 cups of coffee with 1/3rd cup sips: *OOPS*

  • @daimonji632
    @daimonji632 4 года назад +2

    "My brain cant take it all"
    Chrome 5918

  • @KenXyroReal
    @KenXyroReal 4 года назад

    Wish you did expand upon the equations at the end tbh, it's interesting :)

  • @KimuraSetsuna
    @KimuraSetsuna 4 года назад

    I am a 3rd year mechatronics student, I had the slightest idea of chemistry. How? How @The Gold Life could be so knowledgable about both chemistry/bio-chemistry and astronomy?

  • @Dboy21ish
    @Dboy21ish 4 года назад +2

    I use to work nights and chug coffee for 6 years and ya im surprised I'm still alive too.

  • @williamupton3202
    @williamupton3202 4 года назад

    for the convex lens made from tears/swear lets say water for clarity purposes wouldn't the difference of the index of refraction change the focal point?

  • @frimi8593
    @frimi8593 4 года назад +3

    This dude just straight up spent over a minute and a half analyzing a fart joke

  • @furiousdragon6534
    @furiousdragon6534 4 года назад

    1:40 Okay but when i have alot of energy, why do i calm down when i take in caffeine?

    • @parychahal
      @parychahal  4 года назад +1

      because there's a limit to how much influx of energy the human body can take before shutting down and if you already have a lot of energy and drink caffeine, your body purposefully slows itself down in preparation for the chemical imbalance thats going on

    • @josephtheoracle3344
      @josephtheoracle3344 4 года назад

      Adhd gang unite

  • @dericjaytulalian6646
    @dericjaytulalian6646 4 года назад

    Does caffeine increase blood pressure?

  • @jeffborowiak8992
    @jeffborowiak8992 4 года назад +1

    Tournament arc.

  • @TNTspaz
    @TNTspaz 4 года назад

    Caffeine would actually work as a fairly safe performance enchancement drug if we didn't so heavily abuse it as a society. Coffee still works for some until they drink a cup a day and then more and more until it does nothing.

  • @ronin8344
    @ronin8344 4 года назад +3

    senku counted almost 120 billion seconds. doing math in his head is very easy

  • @Person5385-w4s
    @Person5385-w4s 4 года назад +1

    so why didn't he spit on the lens instead of sweating on it

  • @stevenliu2892
    @stevenliu2892 4 года назад

    Pls watch more!! Quite an interesting series

  • @holdmyleash2221
    @holdmyleash2221 4 года назад

    If Shamil saw Ginrou he would be disappointed.

  • @timvansurksum
    @timvansurksum 4 года назад

    Does what you said about caffeine and atp in combination with a sped up liver and kidney mean that if you drink caffeine you get less drunk when drinking alcohol?

    • @HenshinFanatic
      @HenshinFanatic 4 года назад +4

      Not really, it masks the most obvious signs of being drunk, which can lead to drinking too much because the subject would still have impaired decision making and reduced inhibition. Generally the two shouldn't be combined, so of course people invented jägerbombs.

    • @timvansurksum
      @timvansurksum 4 года назад

      @@HenshinFanatic Oh that's so interesting I never thought it would work that way

  • @TWRLS92
    @TWRLS92 4 года назад

    THAT'S WHY COFFEE MAKES ME SHIT?!??!!??!? *THE MORE YOU KNOW*

  • @gliderspace
    @gliderspace 4 года назад +1

    Crash after the caffeine wears off can be solved easily with L-Theanine.

  • @Ankit-ik1ll
    @Ankit-ik1ll 4 года назад +1

    Konichiwa:)

  • @adarshsaurabh7871
    @adarshsaurabh7871 4 года назад +1

    The equation he used to calculate the time required was not needed for sure . There's no need to solve a differential equation to calculate how much energy is concentrated at that point. It's really simple .
    But I don't know how he calculated the time required. With the formula he was showing its impossible to find out time because there's no variable of time in it . And also nothing is ideal and 100 percent efficient so it's really really really tough to find out the time . Well we could calculate the heat given by the lense and the there's the color of cloth which is important it's dark but not black so not even blackbody equation is going to work there but even if we assume it as a black body we would need to know the composition of the cloth what's it made up of . Cotton burns at near 240 c and I don't think they have cotton yet .
    I'm Just saying that the equations he used to discribe seems wrong

  • @hubertguilmain3286
    @hubertguilmain3286 4 года назад

    nice

  • @ThePause17
    @ThePause17 4 года назад +1

    I like at the fact he calls himself an Engineer and in most of these videos he just is saying i don't know. When they teach this stuff in basic science class. But i like the videos tho.

  • @exoticcats6119
    @exoticcats6119 4 года назад

    Probably why my parents have caffeine everyday

  • @MidoriRyujin
    @MidoriRyujin 4 года назад

    noice, i jsut got up from my siesta.

  • @monarchgupta2712
    @monarchgupta2712 4 года назад

    U are wrong on why the lenses are concave, it's not to scatter but to focus the light on retina which wasn't happening before as your eyes were focusing them to early. The concave lense weakens the power of your eye's lense and helps to re focus the light on the retina

  • @user-vg7zv5us5r
    @user-vg7zv5us5r 2 года назад

    9:10 The equations in question:
    1. q sub r=c^n (-delta h sub r) z exp(-e/rt)
    2. c sub p rho delta I/ delta t = Q sub r - Q sub c
    Go figure👨‍🔬🤷‍♂️. Mathematical physics should be universal in principle no difference be it in the painted world of dr. Stone or IRL.
    Addendum 1. "sub" stands for subscript. Search engine should find matchings on the indexed web pages.

  • @dericjaytulalian6646
    @dericjaytulalian6646 4 года назад

    Yeah water really defy science haha

  • @tysej4
    @tysej4 4 года назад

    I mean... Resistence to caffeine is like a thing... That is build up over time.
    Not sure if it can in some small ways be transfered genetically but I remember my first cup of coffee had me pretty bouncy.
    Now imagiene somebody 3000-5000 thousand years in the future with not an spectogram of caffeine ingested. There'd be no hypothetical genetic resistence.

  • @vadimblin
    @vadimblin 4 года назад

    U can actually make fire with water and a plastic bag or foil

  • @shami9773
    @shami9773 4 года назад

    Caffeine speeds up your metabolism

  • @danielsausaman9767
    @danielsausaman9767 4 года назад

    2.12 ,,

  • @nevergonnagiveupuntilibeco5690
    @nevergonnagiveupuntilibeco5690 4 года назад +1

    Sup

  • @stevevillanueva8304
    @stevevillanueva8304 4 года назад

    What about shokugeki no souma . Can you react on it too. Thanks

  • @Josivis
    @Josivis 4 года назад

    And he ate the ingredients raw.

  • @Dezu123
    @Dezu123 4 года назад

    Doing math in head when u dont need to be exact but pretty ok approx is really easy. Just rounding everything once up once down will do the work

  • @nighthawkgaming1962
    @nighthawkgaming1962 4 года назад

    try the promised neverland

  • @TNTspaz
    @TNTspaz 4 года назад

    They are kind of forced to use unconventional methods for obvious reasons. Also while he is a genius, he can't know every little method, he knowledge seems very pin pointed and stretched thin instead of mastered.

  • @sankethbhaskar4236
    @sankethbhaskar4236 4 года назад

    Yeah lmao just say he flipped the lens while he was hunched over.

  • @arontsang
    @arontsang 4 года назад

    WTF are you talking about, prescription lens want to be concave? Prescription lens need to be either concave or convex based on the prescription, namely how short/long-sighted someone is... Your lens are concave because you are short sighted. If you were long-sighted, you would need convex, reading glasses.

  • @tudor2051
    @tudor2051 4 года назад

    Could you do a series on SAO or attack on titan ?

    • @TheFrostedfirefly
      @TheFrostedfirefly 4 года назад +4

      He's obviously doing these series because he's looking into their science. AoT and SAO both don't focus on that.

    • @parychahal
      @parychahal  4 года назад

      I'll do a few episodes, let me know which ones you want to see. Also, RUclips's new comment system is ass so it's gonna be tough for me to find your reply, but I'll look out for it!

    • @chloe-qe6rg
      @chloe-qe6rg 4 года назад

      @@parychahal please please react to ATTACK ON TITAN PLEASE 😊