The Zeroth Law of Thermodynamics: Thermal Equilibrium

[@FourthRoot]

It wasn't until I was a senior in college that I realized that temperature is not nearly as simple of a concept as it seems. Because we can sense temperature, our concept of it forms before we develop language or lasting memories. But ask any non-physics major what it technically means and they'll draw a blank or give slightly incorrect answers like "temperature is the average speed, momentum, or energy, of the atoms." but in reality, it's an ordinal scale that describes the statistical tendency of objects to transfer or absorb thermal energy with other objects. And applying arithmetic to temperature figures will only ever get you an appropriate answer. An object's heat capacity depends on its temperature, so calculating a change in temperature given a change in thermal energy isn't so easy. The ideal gas law makes predictions about the temperature, pressure, and volume of gasses, but even helium deviates from this law slightly especially at very low temperatures.

[@joshuamwesigwa256]

I really appreciate it, your explanation has helped me lots hear. Sure all physics may sometimes seem hard to understand but finally gets easier with continued revision.

[@LiveFreeOrDie2A]

*The Zeroeth Law of Thermodynamics: “Objects in thermal equilibrium are in thermal equalibrium”* Next level.. Ground breaking.. Mind Blown. I can discover new laws of physics too!.. *Newton's Zeroeth Law Of Motion: "An object at rest is at rest and an object in motion is in motion”*

[@kishore4314]

lol

[@mercurius1488]

May seem trivial now that you've already been taught to properly reason but it took thousands of years for these notions to become common knowledge. The only reason science is able to reach astronomical levels of complexity is because they stand on the shoulders of these physicist giants who spent their lives correctly developing the fundamentals.

[@reaper4812]

Zeroth sounds like a damn videogame boss

[@chewinggum5550]

@Sanjith r/woooosh

[@EkxtraTime]

@@chewinggum5550 r/ihavereddit

[@Carrymejane]

Hahaha

[@Carrymejane]

​@sanjith1162 bro not fun 😭

[@prithvirajsingh4681]

Sure it does

[@carlorozzi6916]

Hey Profesor Dave, I'm a 7th grade science teacher and I think your videos are pretty good. You're cool. Keep it coming!!

[@sraaahsraaah9793]

u teach this to ur 7nth graderss!???

[@Noob_Fantom]

@@sraaahsraaah9793 😂maybe he want to make their students future einstein

[@sraaahsraaah9793]

@@Noob_Fantom which grade u in??

[@Noob_Fantom]

@@sraaahsraaah9793 am a college student

[@Lappnissen]

Physician here, trying to refresh my high school level knowledge of physics. I did not know these laws were taught to such a wide range of students. In the medical programme (läkarprogrammet) thermodynamics was also the very first subject we went through (aside from basic Latin), since it is integral for our understanding of biochemistry and cellular biology.

[@Riyuihein]

Admit it , you are one day here before exams 💀

[@prishasmusicalvlogs]

Yeah same 😂 one night before exams

[@Riyuihein]

@@prishasmusicalvlogs 🫡 all the best

[@treatedbywarrior635]

Chal ba

[@ivand.fababaer4007]

Need help Figure A. The objects A and B are inside a closed system ( isolated with the outside environment) wherein they are separated with adiabatic wall (no flow of energy) Figure B. Is separated with diathermic wall (permits the flow of energy) Explain how the zeroth law of thermodynamics in the figure A and B

[@darkzu5718]

thanks bro my 6th grade teacher was giving me such a hard time but you taught me well in thermodynamics, thanks professor have a great day.

[@usethisforproductivity-tg7xq]

young ass mf

[@yosishewangizaw6430]

that is great explanation professor thank you very much.

[@manjulabalu6919]

Faar better than other Educational channels.. Pleasant explanation by Dave Sir..👍

[@reenkyle172]

Wow best explanation of all times

[@nabarupghosh8257]

Sir... please look at this Indian actor.. Ranbir Kapoor.... He..literally... looks like you!!!

[@indianarts1027]

Yahh

[@bhavanikattunga2859]

Yes

[@abhyanshsharma8019]

True. I too noticed it when you said that

[@prishasmusicalvlogs]

Oh same

[@ALONE_BOY00k]

Right bro😂😂😂😂

[@shraddhamarpalli7439]

Thank you so much sir ! I was really confused with this thermodynamics chapter and you made it easyyy❤ by the way lots of love from 🇮🇳India

[@SoniaKhan43105]

your video is amazing and very helpful. But don`t start by saying that this chapter is difficult it demotivates the students

[@amanrubey]

thank you so much sir in strengthening my weak topic. I want your thermodynamics videos in order so help me

[@nabeelmohamed4098]

nice explanation ever!! thanks

[@bestofluckwithsearchoffutu6048]

Nice explanation thanks sir from Pakistan

[@Maddiverse6300]

Great explanation thank you sir! ❤

[@AnjanBhusonNath]

thank you jesus

[@manishajain609]

Nice explanation sir ,thank you ❤

[@shreyanshpuri3298]

Thanks a lot professor ✨

[@Lucifer-cd2wq]

Prof, can you give two or three examples that you can say that the zeroth law is prensent on it?

[@ajinkyadeshpande6271]

thanks sir . please make a series on full thermodynamics.

[@battlerages.official4577]

Prof : Plz If You Could Explain The Full Thermodynamics which is Required to Crack Jee/ IIT / Neet

[@issackkasesela6389]

I was confusing before , thanks much prof

[@jaamaccabdi3187]

Thank you for you helping me Iam very glad to understand you my lessons

[@abdurahmanhassenbarre9405]

soomaaligii ugu horeeyoo halkani ku arko go a head sxb

[@adharshbratlin4743]

Thank you 🇮🇳

[@MehulBShah]

You are from which country sir?? Awesome explanation 👌🏻🔥

[@ariyarathneachala6234]

Thank you

[@Ikigai747]

to the point and awesome loved it

[@angeliemaebonaobra4448]

Thank you Professor Dave!

[@sam-u8y9j]

mewing while watching this for test

[@prithvirajsingh4681]

W dawg

[@lukasplucinsky]

how would define the term "thermal equilibrium"?

[@ProfessorDaveExplains]

when there is no heat transfer, meaning things are at the same temperature

[@zack150]

But isn't thermal equilibrium dynamic as well? so there is a constant transfer of heat but just at the same rate?

[@bweeeeniee1131]

@@zack150 that's what I know, too it's just that the change is equal to zero

[@bitangma.leovillegrace8076]

Thank you!

[@mihirvarsat4529]

why it's called zeroth law of thermodynamic , why zero not three or four ???

[@ProfessorDaveExplains]

well it was formulated after the other three, but it is kind of more fundamental than the others in certain ways, so they decided to just call it the zeroth law.

[@kimj1464]

Thank u thermodynamics jesus

[@rubesh655]

Sir pls suggest the book from which we get basic of thermodynamics

[@jaamaccabdi3187]

Thnks preffosor

[@randomthing808]

But like what is tThermal Equilibrium

[@blexiahbaddest1733]

Thank u

[@wilfridokorie360]

I would like to know if this is Engineering Thermodynamics or not

[@amuthan2898]

Good !!

[@gauravk7738]

the jesus himself taught me thermodynamics today, thanks for saving me from tomorrow's test lord 😭

[@clarissaaudreyhenry5360]

Hi

[@averagestudent5222]

My professor just showed us this video in lecture, lmao

[@utcher8910]

Put the video in 1.75X 😆😆😂

[@jessicatang185]

Diathermal. Adiabatic

[@abdelrahmanmohamed2767]

عظمه ع عظمه ياديف

[@StillElias]

A tautology if I've ever hear one

[@Kanishka12221]

Sir u looks anant ambani

[@rajendrapal9567]

Tomorrow my exam 🤪

[@euber4784]

How's your exam?

[@RA-pu9jo]

no it doesent !! earf is FLAT..... F. A. L. T.

[@sachindas4351]

He look alike Ranbir Kapoor with long hair and Beard :)

[@nixtoshi]

Seems like a dumb law, you are basically saying that if 3 objects close to each other are at the same temperature, they are all at the same temperature ._. The "diathermal and adiabatic" concepts make more sense, but the vocabulary could have been simplified to "heat exchange capacity" or HXC, some elements have high HXC, other have low HXC and no element has 0 HXC. Instead of using such weird vocabulary as "diathermal and adiabatic" which really convey little information about how MUCH they are able to conduct heat.

[@sameeramaweekubura8068]

Much love from ♿

[@mukthang9215]

2022

[@zicada7661]

"Level of desired knowledge" eh? What's the maximum level Professor Dave ?

[@ProfessorDaveExplains]

Maximum level of what, knowledge? I don't think anyone could answer that, maybe ever.

[@zicada7661]

@@ProfessorDaveExplains Maximum level of desired knowledge. If people have different levels of desired knowledge, that's just a fancy way of saying some people dont't care about learning that much, while other's want to learn as much as possible. Shouldn't you try to encourage everyone to desire as high a level of knowledge as possible as an educator ?

[@ProfessorDaveExplains]

Certainly, but there are so many fields. Take me for example. As a generalist, I try to learn as many subjects as possible. That means I don't go very deep into any of them, except maybe chemistry since that's my background. I have only a basic working knowledge of physics, biology, etc. It's unrealistic to expect the common public to all get PhDs in a scientific field, so I try to demarcate what should be accessible and desirable to the public, and encourage them to learn at least that.

[@zicada7661]

@@ProfessorDaveExplains Right, but there is no down-side to having a maximum desired level of knowledge of all fields. It will always come down to priorities of course, but all the great scientists in history shared a desire to learn as much as possible, about as many things as possible, thinking every new piece of information fit into a grand puzzle, with each completed piece revealing the final picture.

[@ProfessorDaveExplains]

For sure. Honestly, I don't know the context of what you were originally referring to, so I'm not even sure what I initially said. In general, more science knowledge = good.

[@amanrubey]

nice music

[@aakifbhat1955]

Love you 😙😙😙😙😙😙

[@mariyamsdv9222]

ill sum it up, it says that if an objecct i in thermal equilibtiom with each other it would be in thermal equilibrium witth each other lol

[@football90min76]

Explain it in a way that its easy to understand👎

[@mdsahazalal3067]

🔝

[@ExtantFrodo2]

Question: Does it take more energy to copy version A of a mutation or to copy version B? Child & sibling. If one has a beneficial affect & the other does not, which one will more likely get passed on to the next generation? There is zero thermodynamic difference between copying one offspring or another. One may be a better survivor or more attractive mate than the other due to a mutation or recombination of genes. There is nothing but extinction to stop the accumulation of beneficial new genes. Thus evolution has to happen & does not violate the 2nd law. It's lion's expending the least energy that leads to predominantly culling the slow deer that jacks up the population of faster deer. It's the predator not using more energy than needed that is satisfied with the easy to see prey that leaves the camouflaged ones to breed their tricks.

[@LiveFreeOrDie2A]

There’s no such thing as “beneficial new genes”. There are only beneficial mutations, as a result of switching on/off already existing genes in a species. There is no accumulation of NEW genes! Only new variations and new mutations. And almost ALL of the “beneficial” mutations are a result of turning OFF, not on, already EXISTING genes.

[@AnkitaBora-r8d]

Anant ambani teaching physics (just the thin version)

[@NattywawaCome-jj6mi]

𝐕𝐞𝐫𝐫𝐲 𝐚𝐦𝐞𝐳𝐢𝐧𝐠!!!!

[@xBobz99]

Wouldn't the universe technically be an adiabatic system then? :P

[@ProfessorDaveExplains]

interesting point! i'm not sure if physicists consider the universe as such but it certainly would make sense.

[@valarmorghulis6462]

Professor Dave Explains yes they do 😊 it is indeed considered as an isolated system, therefore an adiabatic one

[@carlorozzi6916]

BTW, you are a bit of a cross between Dave Grohl and Einstein. Grohlstein

[@ProfessorDaveExplains]

I like that quite a bit.

[@hamzaahamed3149]

tommorws my exm I'm cooked😂

[@kaxtorplose]

Read any Asimov lately?

[@ProfessorDaveExplains]

when i was a kid a little bit

[@kaxtorplose]

@@ProfessorDaveExplains Just a little bit? Good Lord man, are you saying that you haven't read the entirety of Asimovs' Foundation series? The content of which, I realize now, begs the question - Which came first, the zeroth law of thermodynamics, or the zeroth law of robotics?

[@ProfessorDaveExplains]

Haha no I didn't read that one all the way through, I stuck to the short stories. Too busy to read lots of books. But I saw that Apple has the TV series coming so that should be fun.

[@kaxtorplose]

@@ProfessorDaveExplains Wow. No time to read science fiction? Ok, seems a bit odd to me though. Along with the three laws of robotics which are hardwired into every robot's positronic brain, Giskard and Daniel, two robots, came up with a new law of robotics, the zeroth law, whenever it became clear that an individual human was posing a grave danger to the existence of humanity. The zeroth law of Robotics - A robot cannot harm humanity, or through inaction, allow humanity to come to harm. The first law of Robotics - a robot cannot harm a human being, or through inaction, allow a human being to come to harm. Second law of robotics - a robot cannot harm a human being, or through inaction, allow a human being to be injured. Third law of robotics - a robot cannot harm a human being, or through inaction, allow a human being to harm another human being. Paraphrased. The Robots of Dawn by Isaac Azimov. The zeroth law was invented by the humaniform robot Daneel Olivaw, and his friend, a more traditional robot, Giskard. Giskard seized and became non-functional while inacting the zeroth law of robotics, by killing a human who was in the position to cause humanity grave harm. Daneel did not intervene, and survived because he was more advanced. The last words of the novel are heartbreaking. Daneel: Recover, friend Giskard, Recover! What you did was right by the zeroth law! Giskard: But I will... never know... if... the zeroth law... will... ev... er... be... And Giskard freezes, and dies, leaving Daneel alone to care for the human race over the next 10,000 years.

[@kaxtorplose]

@@ProfessorDaveExplains As far as the Apple TV series goes, people have been trying to make Foundation, or The Foundation Trilogy into a movie for half a century! And it doesn't just end with the trilogy, there's an entire series including two prequels - prelude to foundation and forward the foundation, plus all three robot novels that precede foundation, then foundation, foundation and empire, second foundation, foundations end, and foundation and Earth! That's a sprawling series! I don't really have any high hopes of it being done well on the screen. Well, if they're finally going to do it, I better reread my Asimov, so that I can nitpick the hell out of it!