Does Gravity decrease Entropy?

Does gravitational attraction violate the Second Law of Thermodynamics? My Patreon page is at / eugenek

[@LuigiToby]

We need official merch for this channel, imagine having one of those marbles with infinite elasticity.

[@bestaround3323]

Man I could really use a couple of those

[@PotionsMaster666]

Brruuhh... I want them fuzzy Photons resting on my palm

[@mohammedaznadi897]

Imagine the universe collapsing 😂

[@metcas]

Attach little magnets to each marble, and have them bounce inside a coil, and you got yourself infinite electricity LOL

[@timothydana2726]

Underrated comment

[@quantisz4416]

I see in many places people describing entropy simply as "disorder". In the videos of this channel the concept of entropy (and many others) is explained with much more comprehension, depth and detailing. Great video as always Mr. Eugene.

[@EugeneKhutoryansky]

Thanks. As you are probably already aware, I have a video titled, "Entropy is not Disorder" at kzbin.info/www/bejne/rInCiH-omMycocU

[@brahadkokad5424]

Great animations, easy to understand explanation and intuitive flow of arguments throughout the video, and all this in just about 5mins. This is the type of quality content I subscribed for, and you never fail to deliver!

[@EugeneKhutoryansky]

Thanks for the compliments. I am glad you like my videos.

[@bruce-le-smith]

agreed, these are masterful videos!

[@chitrakchatterjee7495]

I don't know you, neither you know me. But I think these videos connect us every single time you upload one.

[@EugeneKhutoryansky]

I am glad you like my videos. Thanks.

[@chitrakchatterjee7495]

@@EugeneKhutoryansky Actually I don't like your videos, I Love your videos.

[@EugeneKhutoryansky]

Thanks.

[@LuisAldamiz]

Sure thing. Hi there, stranger.

[@ishworshrestha3559]

Ok

[@akhandpratapsingh3319]

Let me claim this is the most underrated science channel on KZbin. This quality content needs much more attention 👍💖

[@EugeneKhutoryansky]

Edit: Unfortunately, Sleeping Warrior has become the first person I have ever had to ban from commenting on this channel due to the fact that he kept posting the same comment over and over again under everyone else’s comments. Note: When someone is banned from commenting, all their previous comments are deleted. Everyone else: Thanks for the compliments.

[@primonomeultimonome]

Guys, Sleeping Warrior *is a flat earth troll.* It's up to you whether feed him or not.

[@teemo8247]

@@EugeneKhutoryansky Eugene please do not take any crap from this dude. Your channel is what brought me to the scientific world, at such a young age. The first time i heard about Special relativity and quantum mechanics was through your videos, and I will never forget the feeling of being completley amazed by the concepts, by your animations, the narrator and the excellent explanations!

[@EugeneKhutoryansky]

Teemo, thanks for the compliments.

[@primonomeultimonome]

Just to be clear: before feeding Sleeping Warrior, consider that he claimed or implied things like: - the Earth is flat - science is qualitative, not quantitative - gravity is not a force, therefore it doesn't exist, and Einstein is the one who proved it - relative density is the reason why things go down - the Earth has no geometric horizon therefore it cannot be measured and many other pearls of wisdom you can find on his channel.

[@parshvpatel9644]

Your videos are to the point and pure subject , no distraction of harsh voice or irritating graphics ! Thisisrelly cool

[@rafakordaczek3275]

omg, this title alone made my mind smoke.

[@spamwisegamgee8796]

Yeah I had to pause for a minute before clicking on to this... I didn't know if I was prepared.

[@2Storyz]

That's because in the current paradigm the objects weren't at rest. They "expanded" faster than the speed of light in such a way that the "universe" is flat so off the bat, the premise is deeply flawed

[@graystone2802]

Mind is smoke

[@gorgit]

@@2Storyz im relatively new to physics, so can you explain why they expanded faster than light, while also colliding with each other multiple times? Wheres the flaw? This system is clearly something that happens in the universe on a regular basis. Or where am I wrong?

[@charliepearce8767]

@@gorgit Physics is not something you learn Physics is something you live every day. Look around you in everything you do.

[@michaelwang1730]

I am so confident in the quality of your videos that I always hit the like button before watching, and after I watch wished there's two more like buttons to hit.

[@Bowserex]

Thanks Eugene, love these informative video's!

[@EugeneKhutoryansky]

Thanks. I am glad you like my videos.

[@aashsyed1277]

@@EugeneKhutoryansky thanks sooooooo much

[@larbicherifsaid99]

@@EugeneKhutoryansky in case universe is contracting, the entopy will decrease as even photon emitted by different stars will occupy less time with time especially when all stars and matter get together and to create a big black hole

[@stormtrooper9404]

One and only YT channel on which I first put a like on the new video... and than watch it! Eugene! You are doing awesome job!

[@EugeneKhutoryansky]

Thanks for the compliment. I am glad you like my videos.

[@anonymous.youtuber]

Just fantastic how easily you explain things like this. 🙏🏻

[@EugeneKhutoryansky]

Thanks for the compliment. I am glad you like my explanations.

[@anonymous.youtuber]

@@EugeneKhutoryansky I remember my professors at the university repeating over and over “entropy is a just a measure of disorder”. That never made any sense to me. Your explanation makes so much more sense.

[@EugeneKhutoryansky]

Thanks. As you might already be aware, I have a video titled "Entropy is not Disorder" at kzbin.info/www/bejne/rInCiH-omMycocU

[@mj-8489]

Thank you so much for all the work you put into these videos

[@EugeneKhutoryansky]

Thanks. I am glad you like my videos.

[@julientaurus4174]

@@EugeneKhutoryansky We could easily experiment your simulation in the ISS. We put different balls floating at rest (tennis, bowling, golf, etc...), and we see what happens. Each ball will create her own gravity floating inside the ISS. So we should see all the balls collapsing at final to the heaviest ball (bowling for example).. your video explains we should observe this result.. But you're wrong, because you forgot the Lagrange orbits. Inside the ISS, objects floating, initially at rest, create an equilibrate system, exactly as they have already experimented with MnM's. ♉♉♉

[@EugeneKhutoryansky]

Julien, this has already been explained in great detail in the thread under your comment.

[@julientaurus4174]

@@EugeneKhutoryansky Thank you to answer. But everyone is wrong, scientists have misconception about gravity. In your video, when a marble is situated on a Lagrange point, it shouldn't move anymore. On a Lagrange point, all forces are equilibrated. Also, scientists don't realize that gravity of an object is made by gravity of all the atoms of this object. For example, the gravity relation between earth and moon is created by the gravity relation between all earth's atoms and moon's atoms. Gravity is an electromagnetic force. Scientists also don't understand what a sphere volume means. I'm French and it's very hard for me to explain in english. In a sphere, all forces are applied in one direction, but also in opposite direction, because of the fact it's a sphere. For example, if you face to earth, south pole is attracted to north pole, both right side and left side. So, the poles cannot collapse in the center of earth, and the gravity between the 2 poles has for result to make earth rotate in itself. In your simulation, marbles shouldn't collapse in one point at the end. If the marbles were initially at rest, they should create an equilibrated system, exactly as molecules are equilibrated system composed by atoms. I really thank you for your patience to read and answer me. I'd like you, or others scientists, to find a theory of everything, easily, just changing your conception of gravity in universe : Gravity in universe has exactly the same laws than in an atom: gravity creates energy fields, and Lagrange orbits are the frontiers between these fields.

[@julientaurus4174]

@@EugeneKhutoryansky Scientists should understand that relativity of Einstein is exactly the same than quantic probabilities: "It's probably like this" "Probably? You're not sure?" "No I'm not sure, because it depends of lots of things.... It's relative to lots of things" Relativity in universe is the expression of the quantic probabilities.

[@theonlyramankumar8359]

You're one of the greatest person in the world like Einstein who is able to make anybody understand everything about physics!... You're brilliant... Big fan!!! Love from India 💕

[@EugeneKhutoryansky]

Thanks for the really great compliments.

[@theonlyramankumar8359]

@@EugeneKhutoryansky ❤️🙏

[@julientaurus4174]

@@EugeneKhutoryansky I hope you'll read this message. If gravity between objects correspond to gravity between all the atoms of each object, then gravity is an electromagnetic force. And then gravity attract south pole of each object, but repulse north pole of each object. And so the result of gravity is not to collapse objects, the result is to make objects rotate on themselves and between them. Gravity force from sun attract one pole of the earth, but repulse the other one, and so it has to result to make earth rotate on itself and around the sun, exactly as we can observe. And if earth was initially at rest, gravity force from sun made it start to move, to rotate. I won't insist anymore. Thank you Eugene. I really wait your next video with impatience. ♉♉♉

[@atmsphrn]

Always fantastic and unique display with thorough explanations. A love for these works.

[@EugeneKhutoryansky]

Thanks for the compliments.

[@caiolopezcomz]

Awesome video, and a very solid explanation of a concept so frequently mistaken. Really appreciate the new background music volume. More subtle, less distracting. Still not sure why would you need 3 music changes in a 5 minute long video though. I'd suggest to loop the first one all the way.

[@pragalbhawasthi1618]

An excellent one, as always... wish to see more of these coming...

[@EugeneKhutoryansky]

Thanks. More videos are on their way.

[@chriszachtian]

This video is unique. Why? Because no one I saw until now has neither even touched nor covered this with that simple explanations and within 6 minutes. They always take it as granted. Very good job! By the way, with "Bernoulli effect on atomic scale" it was the same. You seem to teach by intuition, and this intuition is, to my mind, a very good one.

[@EugeneKhutoryansky]

Thanks for the compliments.

[@brianjoelbasualdo7436]

You always know how to surprise us with new content.

[@GaryFerrao]

Your videos are so few and far between. But when they are available, they are gold. This is the perfect use of the notification bell on KZbin. No noise. Pure quality.

[@GaryFerrao]

Also, your animations and voice are ageless - they never get old!~

[@EugeneKhutoryansky]

Thanks for the compliments. The narration is done by my friend, Kira Vincent.

[@tenzindorjee7689]

Love your videos from Tibet Really helpful for my high school studies

[@EugeneKhutoryansky]

Thanks. I am glad you like my videos and I am glad that my videos have been helpful.

[@sergiuszstrzelczyk7984]

Mann, I love the statistical explanation of entropy it's so elegant

[@ViratKohli-jj3wj]

I LOVE your videos Eugene. You are an awesome person

[@EugeneKhutoryansky]

Thanks for the compliments.

[@David_Lee379]

Thanks Dr. Khutoryansky; I love all your videos. Even with a master’s degree in engineering, I still learn so much! And your narrator does a great job too. 👍

[@EugeneKhutoryansky]

Thanks.

[@brianflaherty9054]

I’ve tried to find an answer to this question, without luck, for years! Thanks for the explanation.

[@EugeneKhutoryansky]

I am glad my video was able to provide the answer you were looking for. Thanks.

[@FIRE_STORMFOX-3692]

You were blessed by the algorithm! Let's see how it goes from now on..

[@angelmunoz1925]

Excellent demostrtion vidio. Thank you

[@rahulshetty9335]

Great Video Eugene!!!

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@talleyhoe846]

This channel is an excellent example of what a valuable resource KZbin can be.

[@EugeneKhutoryansky]

Thanks for the compliment.

[@aayush9274]

Yeah description of video shocked me but video settles me down again 😊😊

[@chetanrahi1000]

You are so great 👍 I am very thankful for this all

[@EugeneKhutoryansky]

Thanks for the compliment. I am glad you liked my video.

[@bhoopendrathakur2496]

this video is definetely awesome , please make some more videos related to elctrical and elctronic subject , mostly related to power electronic , your channel have very good content ,love it ...

[@EugeneKhutoryansky]

More videos are on their way. Thanks for the compliments.

[@bhoopendrathakur2496]

@@EugeneKhutoryansky that`s great i am very excited about that

[@physicslover1950]

Wow my mentor that was amazing . 😱😱😱😍😍😍😍🙋🙋🙋 I really loved the way you described entropy with the example of distribution of velocities. 🌹🌹🌹💞💞💞

[@EugeneKhutoryansky]

Thanks. I am glad you liked my explanation.

[@bernardobertamini856]

Amazing! Simply amazing! Thank you so much!

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@shubhanshukaroliya]

As usual sir you again blown my mind from your video.....🔥🔥🔥

[@EugeneKhutoryansky]

Thanks.

[@alamagordoingordo3047]

One of your best videos.

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video. But, I think that many of my other videos are much better, such as "Thermodynamics and the End of the Universe" at kzbin.info/www/bejne/fYDViKyVrrN1rLs

[@aftabahmedahmed5480]

The channel that makes you in love with physics.Thanks allot to you for such an amazing explainations .

[@EugeneKhutoryansky]

Thanks for the compliments. I am glad you like my explanations.

[@zovisapphire]

I would love to see a collab between you and ScienceClic English at some point c: Both of your videos are too the point without overcomplicating things

[@yosefgomgom225]

Yeah, I would love to see it, the most epic explainers collab!

[@MrShtrudL]

Thank you so so much for getting rid of the background music! I (and I'm sure that many more) really appreciate that. Now it is possible to clearly hear the narrating and think about the information more clearly. I am a Physics undergraduate and this is wonderful.

[@EugeneKhutoryansky]

I am not sure what you are referring to. The background music is still there. Thanks for the compliment about my video.

[@MrShtrudL]

@@EugeneKhutoryansky Ohh I see, perhaps my volume is too low, it's reliving either way, even of the music is at lower volumes :) Thanks for the attention and keep on the good job! Fantastic content!

[@EugeneKhutoryansky]

Thanks.

[@modernphil1049]

Wow. Nobody makes videos about questions which a beginner might ask. It makes it more difficult for beginners to gain understanding. I was very fortunate to have my misconceptions about entropy to be cleared by this video. Thanks.

[@EugeneKhutoryansky]

I am glad my video was helpful. Thanks.

[@sunitasharma2536]

1:50 wow great you consider every scenes in your animation.That is one of a particle can revolve around bunch of those created in free space. As centripetal force is enough to revolve in orbit warps space -time by those. And video was really good❤️

[@EugeneKhutoryansky]

Thanks for the compliments.

[@Mysoi123]

Another tremendously helpful video!

[@EugeneKhutoryansky]

Thanks.

[@prasitpoonpipatkit250]

I understand this video quite well. After seen your 7 years ago video namely, Thermodynamics and the End of the Universe: Energy, Entropy, and the fundamental laws of physics with some misunderstanding point in the last month. In that video, time 20:20-21:20, I think, about the sun, that it is dissipating heat to be function properly. So the earth is. Thank you so much for your kindness! Thanks on The great of all wise man!

[@ifollowtheantichristandthe9218]

Thanks for the upload, Eugene. It would be good if you also make video about quantum gravity, and how quantum gravity can explain us what was during and before the Planck epoch.

[@EugeneKhutoryansky]

Thanks. Unfortunately, we don't yet have a theory of Quantum Gravity. Although there is a lot of speculation about it, I prefer to focus on well established theories. Thanks.

[@dnstone1127]

These videos really get your mind thinking, like to see one on the cooling expansion of gas molecules and entropy.

[@EugeneKhutoryansky]

Thanks. I cover cooling expansion of gas molecules in my video "Thermodynamics and the End of the Universe" at kzbin.info/www/bejne/fYDViKyVrrN1rLs

[@LawatheMEid]

Yor videos are rich in value and Easy understandable. Any future video about Feynman's symbols?

[@EugeneKhutoryansky]

Feynman diagrams are on my list of topics for future videos.

[@bruce1437]

Clearly and wonderfully explained. I question from my tired brain, in a universe that began contacting after the initial expansion what would the overall entropy become? Photons are getting shifted blue and confined, but the possible directions increasing, and matter is more lumpy?

[@prakharsoni6406]

These videos are like Gravity attracting us to watch more and more amazing and interesting stuff

[@viniciusfernandes2303]

Thanks for the video!

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@debabratakalita9947]

I love your video more than anything in you tube. I always wait for a new video. Will make a video introducing yourself as we don't know you. And I am very curious to know you. Thank you for such a wonderful video.....

[@EugeneKhutoryansky]

Thanks. I am glad you like my videos. I will never appear on camera for any of the videos on this channel, but there is a video of me on my Facebook page. This video is also located on my animal rights website. The links can be found through the links on my KZbin home page. Thanks.

[@debabratakalita9947]

@@EugeneKhutoryansky Thank you so much 💕 that you reply so generously. You explain everything with such a confidence that sometimes it's become very difficult to decide whether you are a homosapien or God itself. You explain the universe in such a way that it makes me feel as if you have created this universe. I would be very grateful if I would have the opportunity to meet you in person.

[@EugeneKhutoryansky]

Thanks for the really great compliments.

[@edwardsd6967]

Здорово, спасибо за Ваши труды! А подскажите пожалуйста: при учёте расширения пространства - фотоны уже не могут покинуть определённую область и "накапливаются" на отражённых объектах? Тогда энтропия куска вселенной не изменяется? И при учёте рождения "новых" частиц? Или всё иначе?

[@phirrational4601]

Amazing video as always! I always wondered however if the universe's expansion might decreases entropy...maybe not an absolute and universal entropy, but a "relative" one, who is defined by how much information of possible states of matter an observer at some point might perceive (would it not lower if all matter would eventually dissapear beyond the always contracting observable universe?) Really curious

[@anandarunakumar6819]

Great video. I would like to see the details of entropy vs. gravity related order disorder balance. This is a real problem than virtual creation annihilation renormalization schemes.

[@kushagr7132]

😊thanks This question was frustrating me for 1 year

[@EugeneKhutoryansky]

I am glad my video helped answer your question.

[@solapowsj25]

Students and researchers may study gravity from fundamentals in the interaction Surface 2-D x-plane of the Graviton. The 3-D and other volume space and event may then be observed for further knowledge.

[@baasantserenganbold2925]

I just wanted to say Thank you! 😊

[@EugeneKhutoryansky]

You are welcome and thanks.

[@monicaprazeres]

Oh boy...Eugene did it again!

[@EugeneKhutoryansky]

Thanks.

[@elfkind5590]

Whoa, you really leveled up! I look forward to the new Maxwell's Demon.

[@88_TROUBLE_88]

The scenario at the beginning didn't really need justification since the 2nd law refers specifically to closed systems but it is nonetheless a fundamentally veridical declaration and I'm glad that you made it!

[@TeamSkeptic]

My favorite Physics channel.. HANDS DOWN!!!

[@EugeneKhutoryansky]

Thanks. I am glad you like my videos.

[@primonomeultimonome]

Hey Team Skeptic! Go say hello to Riley, he is around trolling about gravity not being a force.

[@primonomeultimonome]

@Flat Earth Data Unfortunately it is.

[@brahadkokad5424]

@Flat Earth Data except it is.

[@JohannY2]

Never thought of it like this before.

[@IncompleteTheory]

I would love to see you discuss this with Sir Penrose. As far as I understand it, one of the pilar of CCC is based on the assumption that the evolution mass from evenly dispersed to clumped matter (aka black holes) seemingly contradicts the 2nd law of thermodynamics. This video seems to prove him wrong, or does it not?

[@kskuan95]

I guess it also reason i always need more space and messy, my jobs are just/not finish at due dates

[@elizabethr4107]

Love yr videos!

[@EugeneKhutoryansky]

Thanks.

[@samapanbhadury5148]

Nice question and wise answer

[@EugeneKhutoryansky]

Thanks.

[@Doping1234]

Very well layed out explanation!

[@EugeneKhutoryansky]

Thanks.

[@Makaronniy]

Amazing video as always! May I ask you - do you have any plans for a book with your lectures? I'm sure many people would love to read them. (sorry if it exist, I didn't see it)

[@EugeneKhutoryansky]

Thanks for the compliment about my video. No, I don't plan to write a book. I can't put 3D animations into a book. Thanks.

[@Makaronniy]

@@EugeneKhutoryansky thank for answer!

[@Olaf_Schwandt]

for the definition of entropy don't forget the temperature (but the temperature is a result of energies and is an expression of the velocities of the particles, and these you have. and don't forget the irreversibility of all properties and locations and vectors too)

[@kartikg.kartikg]

Fur Elise at background is so soothing..😄😅

[@ar.rekhaverma1906]

Very Unique and Out of the box ideas... Loved it... By the way, would like to know which software have you used to create these vids, since I have assignments to do which are mostly animation-based.

[@EugeneKhutoryansky]

Thanks. I make my 3D animations with "Poser."

[@ar.rekhaverma1906]

@@EugeneKhutoryansky Thank you

[@KK-rg3nj]

Great video!!

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@anuragkumar8335]

Hey sir, we would love know something about you!!following u since 2yrs ...but still cant figure out whose there on that side....btw Ur videos are awesome and with very high conceptual clarification!!...helping me a alot in my high school journey!! THNK U SIR 🙂🙂🙂

[@EugeneKhutoryansky]

Thanks. I am glad you like my videos. I will never appear on camera for any of the videos on this channel, but there is a video of me on my Facebook page. This video is also located on my animal rights website. The links can be found through the links on my KZbin home page. Thanks.

[@Pheonix1328]

It wasn't long ago that I finally understood entropy when I made a program to simulate coin flips. To get 100 heads out of 100 flips there is only one way but to get 50 heads there are many more so that's why the graph I made formed a bell curve centred on 50. Reality tends towards 50/50 split in this case simply because that result has more options, just like you said.

[@Gringohuevon]

its not a bell curve

[@nivaldolemos5280]

Which makes you suspicious that entropy can decrease sometimes... it's just so unlikely that, in the macroscopic level, you don't get to see it, unless you observe the system for a very, very long time.

[@Pheonix1328]

@@nivaldolemos5280 It not suspicious at all. Although it's unlikely to get 100 heads in a row it isn't impossible and any system can achieve this but it won't remain that way for long as it will tend to the state with the most "options". See: Poincaré recurrence theorem. It is especially hard since it has to be a closed system, which doesn't exist outside of thought experiments and computer sims.

[@Pheonix1328]

@@Gringohuevon It definitely is, unless you have evidence otherwise.

[@dinglerdangler]

good stuff eugene

[@EugeneKhutoryansky]

Thanks.

[@nikicabilic4146]

I like your videos.. I would rate them as very good.

[@EugeneKhutoryansky]

Thanks.

[@shrirambhogale2764]

Amazing video 😃😃. Please make videos on blackholes please.

[@EugeneKhutoryansky]

I am glad you liked my video. Thanks. Black holes are on my list of topics for future videos. Thanks.

[@ruturajbhogale8095]

Plzz bhai

[@chemseddinemerabet8977]

Thank you very much 😊

[@EugeneKhutoryansky]

You are welcome and thanks.

[@Phooldehishow]

Great explaination

[@EugeneKhutoryansky]

Thanks.

[@BenjaminSteber]

Once you get that heat is released as energy from systems that lower their entropy and/or increase in their organizational structure, and that enough of that heat energy always out spends the loss of entropy the whole concept becomes aa lot easier to grasp.

[@Extremetothemax1]

Nice explanation.

[@EugeneKhutoryansky]

Thanks.

[@teemo8247]

1:42 "Fuzzy Yellow spheres" gotta love that description lol

[@feynstein1004]

Ah so as always, gravity *appears* to decrease entropy locally, while actually increasing it globally.

[@platoniczombie]

Except how does something like Earth give off photons? Or blackholes? Both have gravity and do not act like stars. That part made it a little confusing for me.

[@feynstein1004]

@@platoniczombie Everything gives off infra-red/microwave photons until it reaches thermal equilibrium. That's basic thermodynamics, my man. With black holes it's a bit tricky because they don't give off photons directly, but they still emit Hawking radiation, which is mostly photons. Meaning eventually all of their mass gets converted into photons. There's no way to escape entropy afaik.

[@platoniczombie]

@@feynstein1004 I just get a little confused because I feel as though the explanation is using two different sciences to explain one thing. Are all photons equal? Those emitted by stars are equal to those emitted by blackholes and planets? I'm more inclined to see the universe as an ecosystem than this mysterious entity of emptiness with massive and microscopic objects tumbling about. Do we claim an ecosystem in harmony is at equilibrium, thus, follows the rules of thermodynamics? I ask this with genuine curiosity.

[@babyyoda5074]

@@platoniczombie All photons are not equal. Photons are carriers of electromagnetic radiation or light, so some photons have higher frequency than other(are of higher energy than others). You can look for electromagnetic radiation spectrum kzbin.info/www/bejne/o2XXaJqKoqd-ack. There is also something called blackbody spectrum which describes how objects with different temperatures emit photons of different frequencies. The sun's temperature is about 5800 K at the surface which emits photons mostly in range of the visible spectrum and less photons of higher and lower frequencies than visible light. The surface of earth having far less temperature emits photons mostly in the infrared ranges which is invisible to our eyes.

[@pedrolmlkzk]

@@platoniczombie All photons are equal, what change is the ammount energy they carry individually and therefore their frequency

[@babloovyas1080]

Eugene can I share my question with you? As there are certain things, which are out of imagination, I feel your videos help me to imagine all those things which is still theoretical to me.

[@JeroenSchoenmaker]

Nice video!I know that this is the general view on the matter and that this is a channel devoted to the general public. So, the video does a very nice job in portraying the mainstream view. However, taking it to a more academic level, the rather established thermodynamic models connecting gravity and entropy are related toblack-hole physics and the issue is not settled. So, if someone is interested,in the following manuscript I put forward the idea that gravity can indeed decrease entropy. I know that my stance is not mainstream but the argument is discussed thoroughly qualitatively and mathematically. I believe maybe some of you may appreciate. Look for title "Historical and Physical Account on Entropy and Perspectives on the Second Law of Thermodynamics for Astrophysical and Cosmological Systems"

[@amandasitchin]

Awesome!

[@ArpanD]

Great video as always! Just a question, please answer if possible, what is your opinion on entropic gravity hypothesis?

[@EugeneKhutoryansky]

Thanks for the compliment. This is the first time I am hearing about this hypothesis. I will have to look into it.

[@ArpanD]

@@EugeneKhutoryansky Sure sir. And once again thank you for the great video

[@vorname1485]

I was watching the synchronization video on veritasium and was thinking whether its universal nature is not a hint to the sought after fundamental building block of the universe. Could it not also explain the fundamental nature behind quantum mechanics too? I just came up in my head when I'v read the question in the title of this video and thought of "synchronization".

[@t13fox67]

Now I understand entropy. Thank you so much. This is interesting.

[@EugeneKhutoryansky]

Thanks.

[@LuisAldamiz]

Can you explain it to someone who still doesn't? Some claim that, unless you can, you don't truly understand such complex physical concepts (I believe the claim was made about quantum mechanics but same thing).

[@t13fox67]

@@LuisAldamiz entropy is "a progressive disorder of ANY system. Have you ever notice something getting worse or detonating without use some years later. In thermodynamics it is a progressive inefficiency thru time such as shown on temperature /entropy curve charts. Just like things go wrong without explanation over some time. Or our human race is going to hell in a handbasket- entropy. Just the way nature is. It's just energy of some kind - diffusing in a given system in a random sort of way.

[@LuisAldamiz]

@@t13fox67 - I think I understand the generics of entropy, TY. It's like getting old or dying, a very familiar experience. But what is entropy, which many physicists like to consider "fundamental" in non-layman terms? There's where the labyrinth begins, I'd like to find the exit.

[@t13fox67]

@@LuisAldamiz don't blame you. Its like something just spontaneously ages over time. That's how I see it.

[@JasonRWait]

RE: the video title.. I think the video should mention the role of gravitational radiation and/or consider the case for particles which don't interact electromagnetically :D huge fan

[@EugeneKhutoryansky]

Yes, the system can also disperse energy by emitting gravitational waves or by emitting particles other than photons. Thanks.

[@nilanjankmukherjee234]

Beautifully explained

[@EugeneKhutoryansky]

Thanks. I am glad you liked my explanation.

[@hetdave8679]

Thank u so much , can u please make a video on following topics if u get time Does Heisenberg's Uncertainty principle hold true at Absolute zero, because as Kinetic energy is 0 , velocity is 0 and position is constant Does spontaneous synchronisation violate 2nd law ? If not why ?

[@physicslover1950]

Oh yes this confusing topic really need a video. Nice suggestion.

[@rohanshah7158]

Yea , even i have doubts regarding that

[@EugeneKhutoryansky]

Thanks. Yes, the Heisenberg uncertainty principle always holds. If the kinetic energy could be exactly zero, this would mean that we know the momentum with 100% certainty, which would mean that have no knowledge of the positions. And to the best of our knowledge, nothing violates the second law of thermodynamics. I will add spontaneous synchronization to my list of topics for future videos. Thanks.

[@hetdave8679]

@@EugeneKhutoryansky yes but as the velocity is 0 due to 0 kinetic energy, position should be known as the particle is not moving i saw this but some part of it was confusing physics.stackexchange.com/questions/56170/absolute-zero-and-heisenberg-uncertainty-principle

[@EugeneKhutoryansky]

Het Dave, the conversation in the link you provided simply states that many systems can never reach a state where the kinetic energy is exactly zero.

[@MichelleHell]

The most practical way of understanding entropy is in trying to reverse a process, specifically heat flow. There is no known perfect insulator capable of trapping heat indefinitely. This means we cannot have 100% efficiency when we do heat and energy transfers and transformations. I've seen entropy referred to as the universal "heat tax". Heat and energy radiate at a rate that is greater than is physically possible to reverse the process. This makes sense because you expend energy in pursuit of recycling it until eventually you run out of energy, which becomes the heat death of the universe. Entropy itself is a measure of the distribution of energy states, where zero would be a perfect insulator. In a simple way, entropy is the universe constantly escaping our grasp.

[@paulomartins1008]

If all particles of a field are contained within a subset of that space such that non can be found in a complementary subsets like in the example given where a mass is emmiting photons, then the entropy has in fact been reduced irreversibly - by removing one of the phase spaces of the space - mass from its other subsets, we reduce the dimensionality of entropy.

[@pindo5189]

I like me myself some yello fuzzy spheres :3

[@xsli2876]

Great video. However, on 2:32, I don't understand: when the three stars are contracting, why they emit photons?

[@EugeneKhutoryansky]

What is happening at that time is that the gravitational attraction is causing the universe to contract, but this does not alter the fact that the nuclear fusion inside the stars is still going on as before, and continuing to produce photons.

[@mEstbn]

Hi Eugene How can we measure the many different ways that the velocities can be distributed?

[@jkinkamo]

This and "The End Of The Universe" are cool videos.Thanks!

[@EugeneKhutoryansky]

Thanks.

[@insideoli]

Thanks to you!!!!

[@EugeneKhutoryansky]

Thanks.

[@hydrxyMoron]

3:19 "So much room for activities!"

[@SylwesterKogowski]

If the universe expands and entropy is a measure of how many variations of events can occur, then energy will at some point get dispersed so much, that no event can occur any more and there will bo no more variations of anything.

[@onderozenc4470]

Temperature of universe Is decreasing during the expansion. This can be interpreted as decrease in entropy or the entropy of universe had always been zero which doesn't violate the the second law of entropy : dS > 0 or =0 for spontaneous phenomena.

[@srinivasaprameyah.s468]

Second law and GR is the most universal laws know !

[@Fireway12]

Energy Conservation sends its regards

[@dwijgurram5490]

@@Fireway12 dark matter enters chat*

[@srinivasaprameyah.s468]

@@Fireway12 psedotensors can take care of them !