What EXACTLY is Temperature?!
ฝัง
- เผยแพร่เมื่อ 11 พ.ค. 2015
- You may have heard temperature is just the kinetic energy of molecules, but that's a subtle lie. In this video, Nick Lucid explains those subtlies in the only way he knows how: CRAZY!
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Don't understand why these videos aren't more popular. Bloody good job.
I've been watching science videos since 2012 like Vsauce, Veritasium, Seeker, SciShow... you name it. TH-cam has never suggested this channel to me until a couple of weeks ago. I think TH-cam have to revise their algorithms
Cash Bonanza
NOPE! It's just that TH-cam is a little biased.
What I find funny is when I try to learn new concepts, I teach them to myself in my head, even asking questions and replying. These conversations are remarkably similar to that of you and your clone dude.. lol
Every. Day.
you are the best in explaining everything, love it
That's a good explanation of the practical meaning of temperature, but more generally the concept can be applied to any system with a Boltzmann distribution of energy, regardless of whether it is made up of "matter", and it can also be generalized into several kinds of "temperature" in the quantum case, e.g. based on the partial derivative of the energy with respect to entropy.
I love Nick so much. Seeing his face makes me happy:) Spread the science fun yiew!!! Thankyou for sharing your gifts!
Dude you are awesome. I am a Mech. ENG on to study medicine thanks for helping me REMEMBER complex STUFF!
People who not only KNOW a lot about a topic but also share what they know in an amazing understanding way>>>>>>
UR DOING AMAZING!
wicked awesome ..... you are great! you don't duck the Q's by asking but what exactly is it??? and make me chuckle as well..
Love your videos man subbed! Would love to see you explain entropy hehe and that’s a joke because you just did lol
Americans and the metric system don't go along...do they??
sagar sharma No. We're one of only 3 countries that still use the old British imperial units: Liberia, Myanmar, and the United States of America
***** Yes.. You should make a video on it...what are units area and why we need standard units.. and I understand why USA still use the imperial units, but why do liberia and Myanmar use those??
***** Even that you have modified, e.g. U.S. Gallon :)
sagar sharma They're called "imperial" because it's leftover from the British empire (which included many countries). It's actually a really good video idea.
***** Well I am from India and India was also a major part of british empire...But i am very glad that India has adopted the metric system
Love this video and have seen it multiple times.
Best explanation of temperature I’ve seen so far
im just watching this for my test so this is so helpfull thx for doing these vids
+Spider Jokey You're welcome. Glad they're coming in handy.
Nice to see that you used Richard Feynman's temperature analogy with the damp towels.
Get this guy more subscribers already!!
I LOVE these videos!
Cool video!
I mean: I like the temperature of my videos to be on the cooler side.
So why doesn't the temperature drop inside a vaccuum chamber if we pump out most of the air?
How many molecules do we need to take out of a chamber before it starts to cool significantly?
Is it possible to insulate something with a near vacuum?
It's a great video.
I have a question hope it's not silly. How exactly is temperature passed from one object to another since they are just kinetic energy of electrons, atoms, and molecules? Meaning someone next to me running around in the room doesn't make me run too.
Thanks in advance!
Someone else running around a room doesn't have any effect on how you're moving.......... until they run right into you. That's what's happening on an atomic level with heat and temperature. If the atoms/molecules/particles can pump into each other, then they can exchange the energy. Sometimes they do that by directly touching and sometimes through whatever matter is in-between. If they're not touching and there is no matter in-between, the energy has to be turned into some type of light (usually infrared) and sent that way. Now matter what the method is though, it's about atoms/molecules/particles pumping into each other.
Thanks very much. It is very clear. One question is how atoms/molecules/particles exchange energy? Is it through light (photons)?
they bump into each other, one transmitting momentum into the other, making it move
Subscribed, thanks for video. One thing I always fail to understand is why ppl of science would use non metric measures. Imperial or US standard is so unhelpful when converting across vitually everything. My perfect temperature is 20°C. I am perfectly aware of it's relationship to freezing, boiling, my ideal body temp and the swimming pool next door. I also can easily translate to weight or volume if needed, all without having to use a calculator.
The U.S. is stubborn.
If you mean to discuss the use of non-metric by this channel, Nick addresses it from time to time. He justifies his use of non-metric by the fact that a lot of his audience is still on non-metric.
Thanks Hehmo for your helpful reply. I understand and certainly, there is a distinction between intent to provide entertainment and public awareness. My point then would be to say that anything related to science is usually to promote a better understanding of the natural world. It is is intuitive to use the most efficient models possible to describe whatever processes are involved and the use of non metric measures does not accomplish that. Thanks again!
The Science Asylum So true dude. 😂
They have superiority. (Sorry to say but it's true.)
They don't want to lose their things but say to do that to every country.😡
@Adrijana Radosevic you need more data to convert weight into volume. They are measurements of two completely different things.
Weight measures the earth's pull on something's mass. So if you take the weight and remove the influence of gravity you get its mass.
Then you need to know the density of the substance you're measuring. Some things are heavier then other things. A cubic foot of iron has more mass then a cubic foot of water.
If you know the density of a substance and you know it's mass you can figure out roughly how much volume that amount of stuff would fill. I say roughly because volumes don't always stack into neat and orderly numbers - take 1 cup of water and pour it into 1 cup of alcohol and mix them together and the result is a little less then 2 cups. Water molecules are small enough to slip between the alcohol molecules so the mixture takes up less space.
So.. It's complex and is not a function you should be generally concerning yourself with.
This is wonderful.
A lot of human perception of temperature is also based on conductivity. Things that are more conductive feel colder to us because hear escapes into and out of it faster.
It gives us a weird relationship with temperature because the actual number on the thermometer is just a small part of what goes into our perception of temperature.
Im trying to grasp your two videos on pressure and temperature...
So temperature is the movement of molecules if it does not change the shape of the macroscopic object.
When we measure temperature with a Hg or alcohol thermometer we use that the liquid expands when the temperature goes up, that is it changes the borders of the object.
Pressure is the force from the bumps of the molecules going in the direction of the probe?
you talked about shifting spinning and so on. Can all these movements contribute to temperature and pressure?
I mean if I measure the expanding of a liquid I have a hard time understanding why spinning could change the borders of an object.
Also If pressure is the movement of the molecules applying a force to a surface and temperature is the molecules movements why do you get burnt by one and don't feel force and feel force by the other?
Does it have to do with elastic and non elastic collisions with the surroundings?
+Johannes Almborg
Ok, so you're right that temperature is the motion of molecules and pressure is those molecules bumping into each other (and walls of containers and so on). These are two completely different ideas though. Yes, the molecules have to move to bump into each other, but it's not the motion /itself/ that creates pressure ...only the force during the bump. Pressure and temperature are sometimes related (one can go up as a /result/ of the other one going up), but that doesn't mean they're the same thing. In fact, sometimes temperature can go up /without/ pressure going up (volume goes up instead).
We get burnt because *our* molecules can only move so much without chemical changes happening. A burn is a chemical change in your skin due to excess molecular motion. If you touch something hot, it has a lot of molecular motion in it and that can transfer to you through contact. Pressure, on the other hand, is about how hard the molecules are pushing, not how fast they're moving.
Hope this clears things up.
+The Science Asylum
An example. You have a gas. what can exist in the gas?
From what I understand the only thing that can exist is motion of the particles that make up the gas.
So how do we derive the two man made units pressure and temperature?
particles can bump in to stuff: like your finger, a surface or a probe.
if the bump is like a rubber ball (the collision is called elastic) the particle bounce of the surface with the same speed but opposite direction as the particle had when moving towards the surface. This particle gives a force to the surface. We call that pressure. Heat is when the particle that smashes in to the surface like a wet ball of clay(the collision is called non-elastic). The surface is given all the energy of the particle and we precive this energy as heat.
The thing with this is that you should still experience some sort of pressure from the gas even if the collision is non-elastic. So we can have pressure without heat but not heat without pressure?
A solid object has some kind of retaining forces that make the particles adhere to become the object. Otherwise the same things apply.
is this correct?
I love your videos because we understand esliye
I got into a big trouble with my one atom in a space thought experiment (how to define its heat). This video clarified it instantly!
Thank you, sir!
You’re very welcome. Glad I could help! 😁
@@ScienceAsylum I always had a similiar thing bugging me.
Does it make sense to talk about the temperature of vacuum?
Could you pls do a supplementary video on why temperature doesnt change during melting and boiling? And what exactly is potential energy of molecules?
Look up latent heat temperature doesn't rise as the energy is being used to break intermolecular force and not contribute to kinetic energy
Thanks , i was finding the answer & i got
Mind blowing.
Hey nick.
yesterday i was confused by a teacher , he told me that temperature is only the degree of hotness not coldness , because that we measure it with thermometer which means to measure heat . please nick could you really explain it to me because i am with my studies and i can make my prof understand as well.
please let me know as fast as you can..
Au Sagan teacher didn’t explain their answer properly...
Temperature is motion of molecules... hotness and coldness are meaningless... heat is the amount of energy in an object. Temperature is the concentration of the heat.
You can remove or add heat... you can’t add cold. You lose heat. You put a colder object in proximity to a warmer object it isn’t moving cold to the object, you are moving heat from the warm object to the cold one.
Can someone please explain from 0.46 to 0.57 didnt quite follow what mr Lucid was trying to say.thanks.
How does the kinetic energy of one molecule influence/interact with another? Is it that as one molecule "jiggles" so to does its influence on the electromagnetic field and when it approaches another molecule their individual effects on the field interact? I'm imagining a process similar to how photons were described as causing charges of molecules to wiggle in the Rayleigh scattering video.
Basically how does heat transfer actually work?
Nick, what is the temperature if it is 0 degrees Celsius times 2? Or 10 degrees Celsius times 2? Is there a way to calculate that?
I would only use operations like multiplication or division on the Kelvin scale. It's the only scale that makes physical sense.
I love the explanation for the most part but it kinda had me questioning my definition of temperature, only to find out that my definition was exactly what you said. But I don’t blame you I blame science.
Hey mate, If turning on a light isn't instantaneous what happens at the end of the circuit where the current flows back to the switch? If the circuit was 300000 kms long would there be no current for one second? What about the current leaving the switch? Does it bunch up like a bunch of drunk drivers all trying to get away quick when the light turns green?
Correct. If you made a very very very long circuit, there would be a noticeable delay between a switch flip and a light turning on.
@@ScienceAsylum ... And then, along comes Derek Muller in 2021 to claim the light turns on (almost) instantaneously even when the cct is as long as proposed 3+ years ago... 🙂 Derek's primary interest is how to use "clickbait" and half truths to exploit the TH-cam algorithm (and viewers) for cash... (a real disservice to the community, imho.) "Veritas"? No... More like, "medium vero"...
Kinda sends a chill down my spine...
To what degree should deception and deceit be tolerated...
Warming to the idea that it is time to give Derek the cold shoulder... 🤣🤣
So the reason because temperature stabilises beetween objects is because of entropy right? Please correct me if I'm wrong because i've watched your newer videos and I feel like you would conclude it also here. Unless I'm getting something wrong and switching concepts or something.
3:03
mine is between 75 F and 84 F
I am kind of on board with you with the ideal temperature. I'll go with a little hotter on a windy day or in a windy area like by a lake, but in general I'll go for a little cooler so I can put on a flannel or something instead of being drenched in sweat because it's too hot.
I've been stationed in the tundra of Fort wainwright, fairbanks, Alaska, which at the time the temperatures in winter time were 20° to -20° fahrenheit, not counting any wind chill, and it was also a dry cold then.
I've also been stationed at Fort irwin, barstow, Mojave desert, bordering on Death Valley, California, we're temperatures would reach 120° Fahrenheit.
And I would much rather be in the cold, where I can get warm or prevent getting cold in the first place, just by my choice of clothing, than somewhere hot, where the only recourse is air conditioning.
1:47 I am slightly turned on by the jiggle molecule... is that ok?
Bro we have the same towel. Great video though, that wasn't my only takeaway haha
I am trying to figure out what the difference between temperature and pressure is on the microscopic level. They seem to be the same, both are due to the movement of the atoms/molecules. Yet they are described differently as p/t*v=c
How does this work?
Short Answer: Temperature is about the kinetic energy, whereas Pressure is about the momentum. Both kinetic energy and momentum have to do with movement, but they tell us different things about what the molecules will do.
Heat and Freeze, is the Two Legs,
as the entire Stuff-side walk on,
all Stuff (+Mind-Stuff) is a certain
composition of Heat and Freeze.
It is very important to be a little crazy.
This guy is the absolute best. I live near Ann Arbor and hope I run into him one day to give him a high 5
🙏
Sitting in the house: 68°.
Outside: 73°.
Riding the Harley: 82°.
I love the Batman shirt in the shower!
can you please explain non living atoms forms living organisms
Hello Nick! Please explain how decreasing temperature by using lasers works.
My friend Physics Girl made a video several years ago on that exact topic: th-cam.com/video/hFkiMWrA2Bc/w-d-xo.html
temperature indicates the average kinetic energy of the molecules in a substance. best example is if we have have a drum of water at 30 Celsius and a glass of water at 100Celsius. then we can see that the total kinetic energy of all the molecules in drum is much greater than total kinetic energy of all the molecules in glass of water. but if we look at average energy it is just opposite.
temperature is due to molecular motion. the potential energy due to the bonding etc does not contribute to temperature
Bro thank you so much. Took me an hour to find this information. I actually had to search "quantum temperature" 🤦♂️
Can you please explain what static pressure really is in a pipe? What exactly has happened to the water molecules after the pump? Has the pipe become more "crowded" with water molecules? How does that work when water is considered incompressible?
Molecules don't _have_ to get more crowded to have more pressure. They just have to bump into each other (and the inner surface of whatever container they're in) more often. Getting more crowded is one way they can do that, but it's not the only way.
Sir, will you publish a video about Degrees of freedom? I find this item confusing
I talk about them a little in my video on Lagrangian Mechanics: th-cam.com/video/MIBfKJHMWHU/w-d-xo.html
@@ScienceAsylum thanks, sir Nick.
Isn't 68-74 degrees the ideal temperature for ale fermentation?
Is it possible to cool things with microwaves? Why microwaves always hot things? Or with a magnetic field? Is it possible to cool something with a magnetic field?
I think you were the one who explained this in another video, but since temperature is about kinetic energy, if there's a mixture of more than one type of gas molecule, then when they reach temperature equilibrium, the molecules with less mass will have more speed per molecule than the larger gas molecules. This explains (though incompletely, as I understand it), why lighter gases more easily achieve escape velocity in the upper atmosphere. Really interesting stuff.
It _is_ kind of weird to think that the intermolecular motion can't be directly translated to making the whole mass move faster or slower, but that's how averages work. Because velocity is squared in calculating KE, the average effective speed is positive. But if we re-added (thing?) direction to the kinetic energy, the whole system would be zero. Plus, we're already used to the idea that rotational momentum can't spontaneously become linear motion (and actually for the same reason: the linear speed is zero when you put all the chunks back together), so maybe it shouldn't be as hard to "let go" of as it seems at first.
I think I might have mentioned it in my Mars video: th-cam.com/video/fU0RN_dC2PY/w-d-xo.html As for the "v" in KE being squared, you're right. If you wanted to account for the direction, you'd need to use linear momentum "p" instead. Adding up all the momentum's you'd get zero because that represents the _total_ momentum of the whole thing (i.e. it's center of mass).
ok and what about the temperature of a small number of particles/molecules?
btw great video
How small? If you only have, say, 10 particles/molecules in the contain, it would be difficult to find someone who would call anything about that "temperature."
my fav temp is 1.417E32 K, not too warm not too cold ^_^
I was going to quote The Venture Brothers, but it looks like the Eldorado Canyon Mine Tour also attests to "a cool comfortable 70 degrees".
19~21c
+Polska Pro....There is an absoulute hot..I meant there is a temperature which is considered to be the maximum limit of temp...its called 'Planck Temperature' its 2.55*1032 degrees Fahrenheit. Nick please correct me if I am wrong
sagar sharma Well, yes, technically, it's *considered* the hottest temperature, but I'm not sure I'd put it in the same category as absolute zero. Absolute zero is the coldest because there isn't any motion less than no motion. Planck temperature may or may not be a physical limit. It's just that our laws of physics can't explain any temperatures hotter than it... we may just be wrong. Unfortunately, it's kinda tough to test it since that temperature has only existed in the universe once.
[For some reason, Polska Pro has replies blocked. I can't even tag him in this post.]
excellent video.most of the people have a wrong notion. they think that physics and math are same. this is not correction. too much mathematics can be harmful for physics. i like these videos as he explains things using little math. ones the concept is clear and we have the understanding of the concepts it is very easy to read books which contain math formulas.
My ideal temperature is 9. What's that? Nine _what?_ Oh, I don't know. Just 9.
In the rang with the Vsouce!
This dragon likes his temp at 80 F....nice and toasty!
My ideal temperature is -30 degrees Celsius.
Then I can wear those heavy woolen coats that make me look like a civil war general.
Nice illustration that we don't actually understand what is temperature :) (at least I don't)
Good point that just naming averages isn't always helpful (and if it can lose meaning then imho that meaning wasn't very accurate in the first place).
I think in order to understand Temperature better (at quantum level) we should try to observe and analyze exactly those extremes: absolute zero (if it's actually achievable, or at least test it mathematically if no possible in a lab), and how exactly temperature is transferred between objects with temperature difference.
For example it wasn't that long ago I suddenly realized that if you need material contact to transfer temperature, then in vacuum of space even if "ambient temperature" is about 2°K you wouldn't freeze like you would in extreme cold on Earth (where you're either in water or air environment), or even if considering that vacuum isn't ideal the surrounding particles extreme scarcity would take away your temperature very very slowly ... Well turns out we lose temperature also by infra-red radiation which doesn't require material medium.
But even if counting infrared radiation you would lose your temperature in space (in much higher temp.difference env.) slower than on Earth (in much lower temp.difference env.) - that's why we use vacuum in thermos bottles.
Also particles in space might actually increase your temperature just as most of them increase Earth's temperature (well at least high-energy particles like the ones the Sun shoots at us).
It's a similar question with the decompression expansion in vacuum. Fluids that don't have strong (or none at all) inter-molecular bonds would simply fly-away of rapidly decrease the frequency at which they hit each other. And we know from observation that in such cases temperature loss is very rapid (that how your deodorant gets colder when you use it for a bit longer).
But this puzzles me - if during the decompression expansion of a gas its molecules are flying away from each other and for that period they hit each other less and less then how is temperature loss so fast?! :/
Also at these critical limits that many materials change their aggregate state - solid, liquid, gas & plasma we know (again from observation) that the big energy change leads to fast temperature changes.
To simplify - at most elementary level - we know that why photons have only kinetic energy, they can still change electrons' energy levels, and apparently increase the atoms (and molecules) temperature. But assuming we can for example release (and measure the temperature of) a single hydrogen atom from ISS then how (and how fast) would this atom lose its temperature - or in other terms how it would lose its energy that it had just a moment ago at about 293°K (ie about 20°C in the space station). And have we mapped this energy change to the atom's constituent particles energies?
Also why do we emit infrared radiation in space (assuming we're warmer than 0°K), I mean why not radio-waves?
Do these energy-changes of the above H-atom only come in discreet levels - so that for example the H's electron can drop its energy-level with exactly one level; how to protons & neutrons lose energy in vacuum, and so on ...
1. Yes, we do always lose some temperature (thermal energy) by emitting infrared light. However, that process is pretty inefficient. Because of that, a major concern for spaceships is actually _overheating._ th-cam.com/video/9Xs3mGhQGxM/w-d-xo.html
2. The reason we emit (mostly) infrared light and not some other range on the EM spectrum is because of our temperature. As we cooled off, the peak frequency of that light would change. Eventually, we _could_ get cold enough that we'd emit a different type of light. Like you said, the average temperature of space is a little less than 2 kelvin. That's why we detect microwave/radio light coming from all directions in space. It's called the cosmic microwave background or CMB. th-cam.com/video/3tCMd1ytvWg/w-d-xo.html
3. Yes, hydrogen's energy levels are discrete (just like any other atom). It can only absorb certain frequencies of light: th-cam.com/video/FQJj2kBJ5A8/w-d-xo.html
If a body of mass accelerates linearly and speed inceases, the average kinetic energy per molecule increases. Does it mean the temperature of this body of mass increases? My instinct is no but I cannot explain why. From the individual molecule's point of view, the average kinetic energy must have increased. Does the molecule know which part of the kinetic energy is for temperature and which part is for the linear motion?
why is temperature constant at boiling point or melting point
You said average to many times in this video (just kidding, your channel is awesome)
So your saying this vid was "Well above average" in more ways then one. :D
Wow,some ppl are going deep in these comments.. I'll have to wait for your comment response time on this to sort the wheat from the chaff,so to speak..
Temperature is a measure of a coldness or hotness of object. The temperature of an increase when it gain heat and decreases when it loses heat
My favorite temperature is somewhere around 3 megakelvin. I enjoy fusing lithium.
🤔 Interesting.
If all the molecules in a container are moving in the same direction at a particular speed, let's say running in circles clockwise because of a magnetic field or something, would you measure different temperatures spinning around the container in the same direction and with the same speed and standing still? In case you're spinning and it looks colder than the rest of the room to you, wouldn't you be you seeing a colder object passing energy to a hotter object? Thank you for your awesome videos.
It's possible that you could measure different temperatures in different places in a container. Temperature gradients are very common. That isn't anything that strange.
I meant if all the particles in the container are moving in circles clockwise and you're moving "with them", they're not moving for you, so they don't have kinetic energy, so the container is cold from your point of view, colder than the rest of the room, but the static room is getting heat from it, isn't it?
I don’t get it...yet...I’d like to see this down to quantum level, please. I temperature linear or quantified? I mean for a single molecule or smaller?
Temperature isn't something that exists on a subatomic level, so quantum mechanics isn't really relevant. Individual molecules can't have a temperature. It's something that emerges in a _collection_ of molecules.
It lacked explanation.
I'm still confused😦
Remember: temperature is defined only for systems in a stable equilibrium state while energy and entropy are always defined. Also temperature is related to the tangent of the curve (in the energy-entropy plane) of the stable equilibrium states of a system.
More infos on the thermodynamic book of Gyftopoulos-Beretta
It's just motion of molecules or atoms about a point. Terms team aperture (tem-perature) explain it well. Closely related terms are phonons, infrared rays, electromagnetic radiation, 🔥heat. About light 🌑, it takes more energy to knock the electron about inside the atoms, so a 100 watt LED visible light lamp won't heat 🔥up the object as much as IR would.
My ideal temperature is always 98.6°F.
Nice vid 👍 Why 68-74 Fahrenheit at the end though? Why not use the metic word “room temperature” for, I dunno, the whole world outside of Liberia, Myanmar, and the United States?
Because the vast majority of my viewers like in the United States.
my optimal temperature : 310.15 K .
Is it true that KE Of a object doesn't curves spacetime then what about light it's pure K.E .
This video might help: th-cam.com/video/5uHwyzEnsIw/w-d-xo.html
@@ScienceAsylum please answer my other questions too🙏
If temperature is average kinetic energy of molecules of a matter then why its unit is Kelvin or celcius why not joule ?????? Please reply
1. When we first started measuring temperature, we didn't realize it was related to energy.
2. As you said, it's the _average_ KE, not the total KE. Measuring it in joules might get them confused.
@@ScienceAsylum Thanks
Good question
Maybe this might get an answer, last week I was watching a video where they mentioned a recent experiment someone had done with a pair of hydrogen atoms (i think) and some different (new) form of entanglement where they could heat one atom and it would cool the other one right beside. What was the name of this entanglement because the video didn't mention it and they didn't reply to the question. BTW you have a great channel.
That "experiment" sounds bogus. (1) Individual atoms don't really exhibit temperature. Temperature is a large scale measurement. (2) Entanglement doesn't really work like that. Particles are entangled until measurements are made, then they are no longer entangled.
Thank you for the reply, it did sound too fantastic to be true.
Outdoors, my ideal temperature is between 75 and 85 °F. Indoors, it's between 65 and 75 °F.
My favorite temperature is -40 degrees. Fahrenheit or Celsius, doesn't matter.
Nice 👍
I've always heard heat is infrared waves/infrared radiation. What's up with that?
That's one way that heat can transfer between objects, but not the only way.
Why do the 4 fundamental forces merge into one unified filed if temperature gets hot enough? I want to know why temperature unifies the universe into one filed, and one substance?
My favorite temperature is 20-23.33 celcius.
16-18 Celsius
Ok an average movement per molecule is a good short definition, thanks
Does adding temperatures makes sense ? example 100 + 100 =? [DEGREES CELSISUS]
Yes, it makes sense. You can add anything like that as long as it has no direction (which includes temperature).
I like the temperature outside to be around 55° F
So if there was no matter in the big bang, i.e. the universe existed in a small dense state of pure energy, how did the universe even have a temperature to cool off to allow baryo and leptogenesis and allow matter to form? Also EXACTLY what do they mean by pure energy? I hear that description a lot but have never seen it elaborated upon.
I still don’t understand how it gets cold it winter time
21.4C
Hey Nick!
I watched a video on liquid helium. They showed that liquid helium climbed over and escaped the container.
My question is, when it was climbing it had to do work against gravity. So where that energy is coming from to make it climb the wall?
Second question: Where do you take such silly questions? On YT comment section or some other platform?
1) I don’t know 🤷♂️ I’d have to research it.
2) Here in the comments is definitely the best place 👍
Sounds like superfluidity.
I light is made up of photons then it means light is a matter , then how matter can move at the speed of light ?
How potential energy contributes to temperature?
It doesn't contribute to temperature, but it _does_ contribute to thermal energy.
@@ScienceAsylum Thanks for the answer.
Hey I have a question for u
+lavi tak
...and that question is?
02:06 "Voice of reason" Hahahahahaha cant stop laughing
tricky part about all this "temperature" stuff for me is how one apply term "kinetic energy" to quantum object. What kinetic energy electron can have? Is this even right question? It is a wave after all. Ok, I can ask this about nuclei. At least it is not wave. Or is it? What is this moment, when molecule "absorb" quant of energy wich encrease it's kinetic energy? Or all this works some other way? How exactly termal energy flows from one molecule to another? Don't know answer on any of this questions.