honestly I prefer the + version. it just makes sense to define work and heat the same if we use them in the same context. plus I'm a chemist. i just by nature want energy going in to be positive and energy going out to be negative. it#s just how all of chemistry works.
IUPAC convention ftw. I liked that in Philippe Ansermet and Sylvain Brechlet's book "Principles of Thermodynamics" they include a third term, C, which accounts for chemical work. The mudN term in open systems.
I prefer ΔQ = ΔU + W. It is more intuitive to me that when heat(ΔQ) is introduced to the system, some of it raises/changes the internal energy(ΔU) and some of it is used to do work(W) on surroundings. In chemistry I just remember to change the sign of Work(W), so it transforms to ΔU = ΔQ + W. The chemistry version does make sense, but when I used to forget the equation, the physics version of the law helped me to derive it again.
Dude apply this video for Veritasium's science contest. This is the best video I've seen on this topic. Compress this video and make a youtube short of 1 min
I really don't know how thank you for explain internal energy. I'm a brazilian bachelor in physics and in my whole graduation we only use this term but nerver was explain for us. Thank you, really thank you.
Good explanation.. I would be grateful. If you could make and another video in 3rd Law of Thermodynamics.. Beacuse 3rd law is so difficult for me to understand it...
You're a hero for us highschoolers. I mean we always wanted to have the same feeling for the formulas, which their inventors had. You make this easy for us.
Another way of defining this is that the heat supplied to the system is equal to the change in internal energy and the work done by the system..... This makes much more sense tbh😉
Would it be correct to think of the first law as establishing an equivalence between work and heat for a thermodynamic system (perhaps among other things) in much the same way as the work energy theorem establishes an equivalence for work and kinetic energy for a mechanical system?
Sir I think in Q = DeltaU + W, here W is the work by external forces( like external pressure,etc.) and Work by gas has already been included in the change in internal energy because of work energy theorem. Sir am I correct??
Heat is still technically work, but is caused by pressure differentials in the materials when larger work forces are applied, resulting in vibrations, leading to loss of energy through a release of photons, which are carrying the vibrational work energy away.
So in simple terms signs of the equation changes based on the perspective we take. Negative by taking the perspective of the surroundings and positive by taking the perspective of the system
Parth Sir! Studying Electrodynamics and learning about EMF, Voltage, POTENTIAL, etc really messed up with my understanding of the concept of ENERGY. Could you please make a video explaining WHAT EXACTLY IS ENERGY? Please 😭 Edit: Also, my confusion regarding energy is increased by some people saying "Change in state of motion for an object is expensive, but energy bears that cost" - what does this even mean? How does energy influence a change in the state of motion of an object? Please explain such concepts, along with the types of energies in detail sir! 😭 Thanks in advance! 🔥
Thanks for the suggestion, I'll definitely add it to my list! A basic explanation is that energy is a mathematical quantity that seems to describe very well how different things happen in the universe. It seems like everything behaves in a such a way, that this mathematical quantity must overall stay the same, but can be transferred from one place to another. So it's just an idea we assign to things we see happening around us, that works consistently with how the universe behaves. Hope that helps a bit.
@@ParthGChannel Yes it did help clear some conceptual clutter! Thank you sir!! Eagerly waiting for the video😃 Edit: "That mathematical quantity physically manifests itself when 2 charges attract each other and align themselves into a system, and somehow that's called electrostatic potential energy and that mathematical quantity is somehow the reason for electrons to flow in a circuit." - sir, this is where all of my confusion began. 😭 In that video, could you also please explain how electrons flow in a circuit due to some form of ENERGY DIFFERENCE? Thank you sir!😃
@@ParthGChannel I'm a high schooler n I'm very skeptical of potential energy. Does it even exist? I mean they say : When you lift a box up to a certain height, the work that you did to lift up the box is stored and is called potential energy. I say such thing does not exist. The MGH that it would have is just because of its position above ground not because of the work you did to lift it up. Can u plz clear this up ?
The law of a radioactivity is that an unstable atom does not age. If you make a fresh brand new U238 atom in a reactor today and it is 1hour old, it is identical in every possible way to one that his been in the ground for 4,000,000,000 years that I dig up and place next to it. Think about that for a while, and you will able to derive everything you need to know about radioactivity.
I love parth's videos! I have been with your channel for over a year now and Im thinking about signing up for your patreon! Whats on it? Also, where can i buy the physics shirt you showed on the community post?
Thank you so much for the support! My Patreon is a place for me to communicate with viewers and find out what videos they'd like me to make, as well as an avenue for me to answer questions about my video creation process + more. My top tier (Giga) patrons also get mentioned in my videos at the end! I want to work on offering more to my Patrons too, so suggestions are welcome! Shirts can be found on the "Store" tab of my channel, ua-cam.com/users/ParthGChannelstore Thank you once again for the kind words and support! :)
I get the impression that chemists prefer the + convention, because they (we, in my case) like to think of heat and work as both coming FROM the system, especially during chemical reactions that can generate both. On the other hand, engineers (and a lot of physicists) seem to prefer the - convention, especially when they are considering heat going into a system (like an engine of some sort) that results in the GENERATION of work. Potato-pototto.
I broke the laws of thermodynamics and Im proud to say Im not in cuffs. Quantum laws changed everything and for 18 years my products have never failed.
the goat of youtube physics
Awesome dude
honestly I prefer the + version. it just makes sense to define work and heat the same if we use them in the same context. plus I'm a chemist. i just by nature want energy going in to be positive and energy going out to be negative. it#s just how all of chemistry works.
IUPAC convention ftw. I liked that in Philippe Ansermet and Sylvain Brechlet's book "Principles of Thermodynamics" they include a third term, C, which accounts for chemical work. The mudN term in open systems.
I prefer ΔQ = ΔU + W.
It is more intuitive to me that when heat(ΔQ) is introduced to the system, some of it raises/changes the internal energy(ΔU) and some of it is used to do work(W) on surroundings.
In chemistry I just remember to change the sign of Work(W), so it transforms to ΔU = ΔQ + W. The chemistry version does make sense, but when I used to forget the equation, the physics version of the law helped me to derive it again.
Dude apply this video for Veritasium's science contest. This is the best video I've seen on this topic. Compress this video and make a youtube short of 1 min
U explain things very well. Good job.
I really don't know how thank you for explain internal energy. I'm a brazilian bachelor in physics and in my whole graduation we only use this term but nerver was explain for us. Thank you, really thank you.
Very good, thanks. The energy goes down when it works on something, the energy goes up when you work on it.
Waiting for the second law 👌🏻
If you were my teacher I wouldn’t have dropped physics!
everyone says that until Parth assigns homework and gives exams.
That's very kind, thank you!
Haha I would set very doable exams I hope
this has to be one of the best video explanations I've encountered. It is better than reading the textbook (at least for me). Subscribed!
That's hot! Great explanation Parth!
This video cleared my doubt about difference in heat and temperature ❤️
Very interesting, informative and worthwhile video.
Bhaiya you are great. I love your videos. Especially the wave equation. Thank you
Good explanation.. I would be grateful. If you could make and another video in 3rd Law of Thermodynamics.. Beacuse 3rd law is so difficult for me to understand it...
Beautifully explained... Thank you
Very well explained. Very helpful.
Which app do u use to make videos?? please share with us.
Very clear and concise! Brilliant video mate
Your explanation videos are tremendous, thank you so much!
Are your merchandise shirts available in India ??
I wanna buy them ASAP !! PLSS HELP
Could you explain the difference between enthalpy and internal energy?
u just made me understand the first law of thermodynamics hope I'm
gonna put this law into use as a metallurgical engineer
Make a video on oscillation
You're a hero for us highschoolers.
I mean we always wanted to have the same feeling for the formulas, which their inventors had. You make this easy for us.
You're great sir
Please make a video on the second law
Make a video on 2nd law also
Great video, thanks very much.
Another way of defining this is that the heat supplied to the system is equal to the change in internal energy and the work done by the system.....
This makes much more sense tbh😉
That's why I like the + version more
Ya me too
Brilliant.... Could you please mention the software u use to write text, it seems handwritten.. also the animation part... I shall be grateful
Question: based on this context. Temperature is part of the internal energy. Or a measure to describe the internal energy?
Would it be correct to think of the first law as establishing an equivalence between work and heat for a thermodynamic system (perhaps among other things) in much the same way as the work energy theorem establishes an equivalence for work and kinetic energy for a mechanical system?
Sir I think in Q = DeltaU + W, here W is the work by external forces( like external pressure,etc.) and Work by gas has already been included in the change in internal energy because of work energy theorem. Sir am I correct??
Please make video on quantum holonmy theory
Heat is still technically work, but is caused by pressure differentials in the materials when larger work forces are applied, resulting in vibrations, leading to loss of energy through a release of photons, which are carrying the vibrational work energy away.
Can you take up 'enthalpy' in next video?
So in simple terms signs of the equation changes based on the perspective we take. Negative by taking the perspective of the surroundings and positive by taking the perspective of the system
Loved it......
Very clear TY
Parth Sir!
Studying Electrodynamics and learning about EMF, Voltage, POTENTIAL, etc really messed up with my understanding of the concept of ENERGY.
Could you please make a video explaining WHAT EXACTLY IS ENERGY? Please 😭
Edit:
Also, my confusion regarding energy is increased by some people saying "Change in state of motion for an object is expensive, but energy bears that cost" - what does this even mean?
How does energy influence a change in the state of motion of an object?
Please explain such concepts, along with the types of energies in detail sir! 😭
Thanks in advance! 🔥
Thanks for the suggestion, I'll definitely add it to my list! A basic explanation is that energy is a mathematical quantity that seems to describe very well how different things happen in the universe. It seems like everything behaves in a such a way, that this mathematical quantity must overall stay the same, but can be transferred from one place to another. So it's just an idea we assign to things we see happening around us, that works consistently with how the universe behaves. Hope that helps a bit.
@@ParthGChannel Yes it did help clear some conceptual clutter! Thank you sir!! Eagerly waiting for the video😃
Edit: "That mathematical quantity physically manifests itself when 2 charges attract each other and align themselves into a system, and somehow that's called electrostatic potential energy and that mathematical quantity is somehow the reason for electrons to flow in a circuit." - sir, this is where all of my confusion began. 😭 In that video, could you also please explain how electrons flow in a circuit due to some form of ENERGY DIFFERENCE? Thank you sir!😃
@@ParthGChannel I'm a high schooler n I'm very skeptical of potential energy. Does it even exist?
I mean they say : When you lift a box up to a certain height, the work that you did to lift up the box is stored and is called potential energy.
I say such thing does not exist. The MGH that it would have is just because of its position above ground not because of the work you did to lift it up.
Can u plz clear this up ?
@@md.ayaanahmed5152 exactly what I used to think
Commenting for the algo + made a lot of sense in a short amount of time which might be useful next year when we get onto thermo
Can you do law of radioactivity
Please
The law of a radioactivity is that an unstable atom does not age.
If you make a fresh brand new U238 atom in a reactor today and it is 1hour old, it is identical in every possible way to one that his been in the ground for 4,000,000,000 years that I dig up and place next to it. Think about that for a while, and you will able to derive everything you need to know about radioactivity.
@@ishanmukherjee5194 yes
@@ishanmukherjee5194 thanks man
Brilliant 👏
I love parth's videos! I have been with your channel for over a year now and Im thinking about signing up for your patreon! Whats on it? Also, where can i buy the physics shirt you showed on the community post?
Thank you so much for the support! My Patreon is a place for me to communicate with viewers and find out what videos they'd like me to make, as well as an avenue for me to answer questions about my video creation process + more. My top tier (Giga) patrons also get mentioned in my videos at the end! I want to work on offering more to my Patrons too, so suggestions are welcome!
Shirts can be found on the "Store" tab of my channel, ua-cam.com/users/ParthGChannelstore
Thank you once again for the kind words and support! :)
@@ParthGChannel OFC! I love your videos and spring on them the second i get the chance!!!
Sir I'm from India
You’re the best
Pls give me!!! online lectures of physics!!!!
What it a particle quantum tunnels inside the system?
I get the impression that chemists prefer the + convention, because they (we, in my case) like to think of heat and work as both coming FROM the system, especially during chemical reactions that can generate both. On the other hand, engineers (and a lot of physicists) seem to prefer the - convention, especially when they are considering heat going into a system (like an engine of some sort) that results in the GENERATION of work. Potato-pototto.
I looked up a couple books, and mechanical engineers do prefer the - convention. I am a chemical engineer, so also like the + convention.
I'm waiting desperately for the oscillation vedio
You played a later section of your outro music.
My friend name also parth he also so intelligent like u
no jokes with Fight Club?
-w killed me at the first minute
Sir please make a video on oscillation. Please don't reject this request please please please please please please please please please please please
I guess the change in thumbnail and video title is the effect of Veritasium's video 😅😄
Sir, this is for Physics or chemistry.There is a difference of sign in physics and chemistry.Regards.
You don't have a single vedio on oscillation
First
I broke the laws of thermodynamics and Im proud to say Im not in cuffs. Quantum laws changed everything and for 18 years my products have never failed.
Oh no, you kept the mathematics as simple as possible. Do you know anybody, who while explaining some law of physics keeps math very complicated?
Fifth
No one who is commenting now has watched the whole video
tl;dw?
Please, no background music, it's annoying.
മലയാളി ആണോ 😕
I feel robbed
Why?
i think he talks too much on what could be explained in a few words with few maths
Are you an Indian?