I'm just leaving a comment to bump your rank, because far more people need to see your videos.

@Kathy_Loves_Physics

4 жыл бұрын

thank you as always

@cashewABCD

2 жыл бұрын

The Count if Dracula is increasing the rank count. Saw it here first.

I have a PhD in chemical physics, decades ago, retrained as an epidemiologist, now retired. And I am cycling back to physics and having so much fun with your videos. I think more teaching of science from a historical perspective would enhance understanding and definitely enhance retention. All of us scientists stand on the shoulders of giants and those of lesser contributors, but both need to be recognized and studied as to how they came up with all this stuff. Thank you for making these wonderful videos.

@brothermaynardsbrother

Жыл бұрын

Hear! Hear! Qapla’!

@ericephemetherson3964

Жыл бұрын

You have a PhD in narcissism.

@ElectronFieldPulse

10 ай бұрын

I am a 36 year old research chemist, sadly I only have a Bachelor's degree. I love learning though, and I completely agree with you. Increasing the number of different contexts in which you learn something certainly makes it easier to retain. It also helps you understand the logic of it all. I was always wondering "but why did they do this, and what was the use for it?" during my college classes. The nice woman who makes these videos has really helped me get a better grasp of some of the physics I wasn't exposed to as a biochemistry major.

There are tens of thousands of science and physics channels on this platform. However, none so concise, so informative and so enjoyably understandable as Professor Kathy's. This level of intellectual clarity in all things 'physics' is a rare treasure.

I’ve studied physics for so many years on my own, this is probably the best channel i’ve come across. I cherish your work Kathy.

@sirwinston2368

9 ай бұрын

BSChE 1989. Going to retire and go back to Michigan Tech to get a degree in Physics. I have two years to relearn Diff Eq, Fourier this and that, Legendre's polynomials, and matrices!, etc., before I take a class. When I went to school, seems all I did was learn math equations and be certain I could pass the test. It's all these background stories that add so much to the basic lectures. ya know? Thank you Kathy.

Kathy, four years later Youtubing "Rudolf Clausius" and your video is first. You've had such reach! Thank you for all your work over these years.

When i was teaching thermodynamics I explained entropy as a measure of the quality of heat and gave an example of pouring a cup of hot water into a tub of cold water. The heat had not gone anywhere, but its value or quality had been reduced as its entropy increased.

@woodysdrums8083

2 жыл бұрын

That is a very good example.

@mahadevprasanth1697

Жыл бұрын

In Engineering we have a term called exergy to describe the quality of energy, you mentioned.

@jasoncassidy492

10 ай бұрын

If you changed that to the 'quantity' of heat rather than the 'quality' of heat I could agree with you. By summing infinitesimal quantities of heat, (integral dq), Clausius regarded entropy as a summation of heat quantities.

Physics, when taught along how it came to be the way it is, becomes one of the most beautiful things in the world! Love this video, ma'am. Amazing work!💎💎

@Kathy_Loves_Physics

4 жыл бұрын

Vishank Patel thank you for the lovely comment.

@vishank7

4 жыл бұрын

@@Kathy_Loves_Physics My pleasure!

@David-km2ie

3 жыл бұрын

Well said

@vishank7

3 жыл бұрын

@@David-km2ie Thanks man!😄

@seanleith5312

2 жыл бұрын

On science, I side with the British, they invented science. German are the followers in science. They are leaders in music, almost as good as Italians.

Entropy is without doubt one of the most amazing facets of Physics, and your explanation of the history of its discovery is fascinating and very well researched.

I just want to say that the clarity of your exposition and the correct stress on the important conceptual parts reveal how deep is your understanding of physics. Everybody has something to learn from your videos, from high school students to professors.

@Kathy_Loves_Physics

2 жыл бұрын

That was such a lovely comment, thank you.

Every physical chemistry student learns the three laws of thermodynamics in the first week: of class 1: You can't win. 2: You can't break even. 3. You can't get out of the game. Thank you for a truly delightful tour of some of the most interesting and important aspects of the discovery and articulation of some of our most basic physical laws. Many years ago I was taught the Carnot cycle and phenomenological differential equations of entropy as an undergraduate. It wasn't until graduate school that I was introduced to statistical mechanics, canonical ensembles, and partition functions. It was all a very satisfying theoretical unification of macroscopic and microscopic behavior of molecules, but the macroscopic equations were much more useful in the laboratory, especially delta S = integral of heat capacity/T x dT. We used a scanning calorimeter to measure heat capacity as a function of temperature during a solid-solid phase transition in certain polymer crystals, and were able to determine the entropy change between the two solid states, which we could also predict from molecular energy models.

I m a professor in mechanical & I see your videos for better explanation to my students. Good work done by u.

Thanks for this! Even with a master’s in mechanical engineering, this is one of the best explanations I’ve ever heard.

Excellent. As an engineer, through college, I was taught thermodynamics in the language of Kelvin and Clausius (it was long time ago, but not nearly in the 19th Century). I never fully grasped it until in grad school I picked up a book someone left in the lab. It was titled Something-Something Statistical Mechanics and it was a revelation!

@A_Renaissance_Man

2 жыл бұрын

OMG, I was going to write this exact same comment.

@tupaicindjeke275

2 жыл бұрын

I never liked thermodynamics.

@mincos_outon

2 жыл бұрын

@@tupaicindjeke275 yeah, and i really hate gravity force every time i fall to the ground, but gravity doesn't care either. Best regards, friend.

A miracle. Something on the internet that CLEARLY explains the second law of thermodynamics (and gives a history lesson). Find a way to stick some Jake Chudnow music in the background and you got something I could watch for eternity.

@Kathy_Loves_Physics

4 жыл бұрын

Alpha Saith turns out we have very different tastes in music but glad we agree on science and thanks for the lovely comment.

@SH-bl9wh

3 жыл бұрын

Listen to it for eternity? We can't escape the 2nd law..😜

@sanjursan

2 жыл бұрын

Alpha Saith: Oh please, must everything be accompanied by music?? Some people would walk through a bird sanctuary with ipod and earphones, sigh.

@fjb4932

2 жыл бұрын

A. Saith, "Music " ? Heavens NO ! Do people go to a rock concert to learn science ? Hell No ! Adding noise to learning is as sensible as taking a shower while eating spaghetti. No, no, NO ! ...

Brilliant video! I'm a PhD student in Chemical engineering and I think you are the very first person on KZread or any University I've even being (already 3), or even any book I've ever read who finally does a video with the correct interpretation of Clausius ideas. I absolutely agree with you, this ideas cannot be fully understood without the historical background of the different scientist who participated on this revolution. I wish with all my heart you could make a video explaining the second and first law combined. Where they finally concluded entropy is the conjugated variable of the temperature. I think every book has the mathematical derivation starting with dS= dQrev/T, dU = dQ + dW and dW=PdV to finally arrive with dU = T dS + PdV. However I think there is a lack of the fundamental understanding. I think somehow Clausius was thinking in the idea of disgregation and how by knowing the disgregation we could then know the temperature and vice versa. As you mentioned this idea of disgregation is connected with the position of the particles (the possible positions) which is also connected with the Boltzmann equation. I think this is all beautifully connected and I hope you can make a video talking about it =D Thanks for your video. Great Job!!! Looking forward to see more of your content!

@Kathy_Loves_Physics

4 жыл бұрын

Edwin Rg so glad you liked it and thank you for the wonderful compliment. I usually try to limit the math in my videos as I want it to be accessible to all. See what you think of my next one on Boltzmann’s entropy equation and see if it connects things in a way you like

@edwinrg5768

4 жыл бұрын

@@Kathy_Loves_Physics. Thanks Kathy. Looking forward to see more of your work!

@xOxAdnanxOx

3 жыл бұрын

Edwin Rg hi Edwin, I am a chemical engineering student ( undergrad ) and would like to hear from you tips/recommendation to get to know thermodynamics for chemEng. Can an undergrad chemEng student get to understand these laws by going back in history to have a knowledge on how they came? Any other tips regarding chemical engineering skills & or knowledges need to be very familiar with in the undergrad level will be much appreciated. Thank you in advance!

@opubogbenebo6954

Жыл бұрын

Edwin Rg, reduction of the Carnot Cyclic Engine in the limit to infinitesimal size produces the context of analyses of Clausius, and hence the equation dS

@opubogbenebo6954

Жыл бұрын

Edwin Rg, you would to keep in mind that Clausius did his work before the onset of the atomic age. The reduction of the Carnot Engine in the limit to infinitesimal size has a bound of the Continuum to support differentiability and is Newtonian. Here is the imputation of the modern science that follows: The entropy of a matter increases as the internal energy content of matter increases. So the abstraction: dE

Another really good post. I think a historical perspective is valuable because to understand the answer you first have to understand the question. Indeed a correctly framed question is the necessary prelude to getting an answer to it. History gives us some, at least, of this element; plus of course the human interest. Other physics channels use this to some extent (Yong Zhong, Alexander Unzicker, Pierre Robitaile, all well worth checking out) but you Kathy are a master of this technique.

Kathy produces excellent content here. I get an additional kick out of the bright lamp's reflection in her eyes. Reminds me of a wildcat talking about physics.

"how Boltzman got credit for an equation and a constant … _next time!"_ is the nerdiest cliffhanger ever. thankfully, I'm watching this 2 years in the future and won't have to wait.

Having been magnificently click-baited previously, now I'm greatly fascinated, and looking forward to more of your work. How much easier it would have been to learn this stuff, which I did, as a schoolboy/student in the late 50s/early 60s if the teachers/lecturers had also related the wonderful stories behind these discoveries. It makes a whole lot of difference. Thanks. PS Clausius never got a mention when I was 'taught' Thermodynamics. Or maybe I forgot.

@BritishBeachcomber

2 жыл бұрын

I agree. The history of science should be taught as a separate, adjunctive subject, for any student of the sciences.

@keithammleter3824

2 жыл бұрын

You most likely forgot. You would have been, or should have been, taught the Clausius-Clapeyron relationship re vapour pressure

@tonyduncan9852

2 жыл бұрын

@@keithammleter3824 Actually it's possible that the 'authorities' may have failed to notify me. It was fifty years ago. I don't forget - or have I forgotten that I've forgotten?

@tonyduncan9852

2 жыл бұрын

@@petersack5074 Science branches naturally from Philosophy by applying it to the study of matter. Of course we should all take care, and science tells us what it is that we should care for. It's nice to see some passion about this. EXCEPT: a) Life *_emerged_* from non-life, just as previously suns and their planetary systems emerged from the ashes of exploding stars, just as later still Consciousness emerged in living beings. The Universe started simple, and emergent processes began of increasing subtlety and complexity. There is no reason to suppose that the Universe has stopped EMERGENCE, and there is at present, and probably there never will be, a way of predicting the manner of the next emergence - but maybe you're looking at its very beginning. God is a myth, of course, and b) _"forces which mankind cannot even begin to understand"_ - you haven't been listening. Go study.

I had a life and death struggle with college physics. Now I think I can enjoy it. After all, physics makes the world go `round.

I love your term 'messyness' for entropy. Never in a million years would I have made that connection. However, I did teach my daughters that most games we played were high entropy to low entropy games. My PHd microbiology daughter knows now what that means. I've listen to many of your talks. Outstanding!

@Kathy_Loves_Physics

2 жыл бұрын

I got that line from a student and I just thought it was perfect.

@Celtic_Thylacine

2 жыл бұрын

I always found it difficult to square in my head. Maximum entropy for a gas for eg. is in its lowest energy state where it is "equally" distributed. But to me that is a very "clean" arrangement not a "messy" or "disordered" one. The same goes for the universe. As everything spreads apart to my mind it becomes more uniform, or ordered in some sense. I know this just an artefact of my thinking, but I thought I'd share.

@tedmoehring6959

2 жыл бұрын

​@@Celtic_Thylacine You are right, from my understanding it is not a increase in something being, "messy", or an increase in disorder, but I thought entropy was just an increase in more possible microstates of a system, an increase in possibilities! At least that is how my Thermal Physics class frames it. And I have a test tomorrow in it, which I should probably get back to studying for!

@Marwa-mv6wv

2 жыл бұрын

Thats how teachers explain it in uni or at least my teachers, entropy basically means the level of disorder .

The funny thing is that the second law can be stated in twenty ways. I remember my tutor at University use to say that you can teach about Thermodynamics without mentioning entropy at all but it would be harder.

The most educational and fun videos on the net. Keep up your great work .

Just WOW! Thanks so much for this. Back in the Sixties I did a school Subject called "Electricity and Magnetism". I also did Chemistry, Biology and Physics. Little did I know the "Elec & Mag" subject would lead me to remark at about 24yo during my training as a Telephone Exchange Technician "Doesn't everybody know this?" All the scientists mentioned here are "household names" to me, but this background to the discovery processes is just awesome and so enlightening. I wonder how come we never learned all this. Could it be that if we had video presentations like this at the time we could have learned so much more in the time of just one class period?

Just discovered your channel a couple of days ago. I find your presentations both enlightening and engaging! I'm a frustrated former physics students from the mid 70's who had that pursuit close when it was discovered I have dyscalculia. So much for my dreams of being a working astronomer! However, throughout my life I've tried to keep as current as possible with both fields. I've always enjoyed rich science programs that respect the intelligence of the audience. Keep up the excellent work!

The things you channel teaches us, or correct us on is amazing. Always something to learn for sure! Thanks Kathy!

I had completely forgotten when I understood this very important fact. Thanks for the tune up! As it turns out, in what I am attempting to accomplish right now, this becomes very important to me! Ain't energy science a blast??

"Let's go!";) - Love it! So inviting, comforting, and powerful at the same time!

Love the narration and the energy and the curious tale!

Kathy, love your passion for the subject!!!! It's contagious!!!

Excellent video, Kathy. I always learn a lot from your videos and you're an excellent narrator.

Wonderful presentation. So informative and illuminating.

Kathy I keep coming back, cannot skip keep your channel. I think I am in love with your presentation of physics and it’s history

You make me love the internet again, thank you.

Thanks Kathy for all your work on these interesting videos!

KATHY; when I was a freshman at university, a professor explained the potential for the Heat Death of the universe. The lecture room had hundreds of freshmen. When he finished the explaination I suddenly laughed outloud. No one else had made a sound ! This brought that memory back !! Little did I know !

Thanks for making these videos. I love your enthusiasm

"Things fall apart... it's scientific." Thought it was more nonsense lyrics until Dr. Love's entertaining lecture. The ability to make what I thought was boring subject interesting and worth while.

this, amongst others, was excellent, very pleased to have found you Kathy

That's a wonderfully done video. Thank you very much and keep them coming.

I am class 12th science student and my curiosity level goes up..Thank you to make me a real science student..

I love the history of science and I love how you present it in your videos. For my learning, equations when worked with actual data examples, are always more effective teaching tools. Doing so makes the physics more accessible to my understanding. I have found that this is nearly always so for a certain percentage of my students as well.

I just stumbled on to your channel and subbed. These videos are delightful! Thank you for doing them Kathy!

i have never looked into these laws with such great detail as a student and after listening your explanation it makes way more sense and logic behind it... good work

Absolutely LOVE your fascinating channel! Thank you!

@Kathy_Loves_Physics

2 жыл бұрын

Thank you

Fabulous. Your enthusiasm shows, and your explanation is very good. Although even as an engineer who learned this stuff 40 years ago I am now going to have to replay it a couple of times!

An outstanding and clear presentation - as usual. I never had any professors who were as good at explaining physic in a way it could be more easily understood.

What a great account of the history of entropy and very nice video

I'm hooked on your videos and am watching with great interest to remember what I learned in physics and thermo classes and pick up on what went over my head or in one ear and out the other.

Very nice presentation on the origins of the second law. 👍

Love your enthusiasm!

Excellent, with great clarity. Thank you very much!

I always learn something new with your videos. Thanks.

Thanks for that review. Loved it

This is so cool! Very informative. Thank you.

You are clear, entertaining, informative and have a lovely voice. I frankly think this channel should have millions of views.

@Kathy_Loves_Physics

2 жыл бұрын

Thank you so much! Maybe, eventually I will have 1 million views who knows?

Outstanding presentation on Entropy! Simply stated and succinct. Thank you for sharing this know how. Liked and subscribed.

A very clear and interesting presentation. Tnanks! It amazes me that these guys were able to figure out something so strange and subtle. It's so much more complicated than the first law. I was sure that there must have been years of discussion and dead ends to arrive at it.

YOU DESERVE MY "LIKE". Thank for such a wonderful and detailed video of thermodynamics. I learned this in my school but i have enjoyed it today. THIS is the the you tube channel where we rediscover the laws of physics.

You make great sense, and thank you for all the hard work you clearly have displayed. This also fits In because so many cold hidden facts have warmed me with an abundance of potential knowledge!

In my mind you have earned the right to make longer videos, but I doubt that works for most viewers. I say that because I got lost in this video, possibly because it went to fast. It happened b4 9:35 in the video which is when I wrote this.

Loved your interesting presentation

I learned of Clausius after college when i found a large publication on thermodynamics online that devoted 100+ pages to the history of the first people to conceptualize and attempt to give mathematical construction to what they were experiencing during the 1800s.

Beautiful video…made my day.

Keep them coming Kathy; fantastic as always.

@Kathy_Loves_Physics

3 жыл бұрын

Jr cary thomas thanks

Congratulations for your very clear and documented memos on the history of physics!

Thanks a lot. I finally grasp this mysterious concept

Kathy is the clearest science presenter on youtube. I understand this when I didn't think it was possible.

Just discovered this channel and it's awesome. Keep doing the good work

@Kathy_Loves_Physics

2 жыл бұрын

Thanks

Entropy can also be defined as achieving equilibrium which make much more sense than disorder ( which causes confusion with man made description of disorder)

@sagarshrestha5800

2 жыл бұрын

For eg : you may think that entropy of the very hot object might be high but it is not so. It depends on the environment in which it is in. Since it is very hot relative to environment the system(object ) loses its heat until it is equilibrium to the surroundings temperature. And the hot object relative to surrounding have low entropy. Entropy is first appeared and came into existence with the 'concept of spontaneous process'

I love your explanations.

Very nicely done

When I studied physics, I could usually get the right answers but I often found explanations unconvincing, particularly in Thermodynamics and Quantum. I wish I had a teacher like this.

Excellent video. Thank you!

You have taught the subject so easy way. Mind-blowing job done by you for us so novish so inefficient in the world of science. THANK YOU MR. SCIENTIST.

Delightfully well done. TY

@Kathy_Loves_Physics

4 жыл бұрын

you are welcome, thanks for commenting

Your videos are amazing!

Great video Kathy!

I think the quote "to cast the theory overboard" at @1:49 is in Clausius' 1851 paper "On the Moving Force of Heat, and the Laws..." I love your videos thank you. I will be signing up on Patreon!

@Kathy_Loves_Physics

3 жыл бұрын

Nathan Crock thanks for the correction. If you become a Patron maybe you can catch my mistakes before I publish! Thanks again.

Awesome videos! Thank you!

Thank you for clarifying.

Very Great Content please keep it up .

Great explanation! 😇 Our words provide a bold affirmation of our innermost thoughts; they are a confirmation to the world of how we see others and ourselves. What you say and do is an accurate indication of what is in your heart. Words shape how individuals think, act, and learn.

I suspect Clausius used S to represent Entropy as the first letter of Sum or Sigma. Because E was already taken for Energy. He proposed using an integral as you showed, and the integral symbol is also an S, in the font style of the eighteenth century.

@alainpean1119

2 жыл бұрын

A lot of sites say the Clausius chose the letter S in honor of Sadi Carnot, even if he did not said it explicitly.

Just found your channel. My thermo professor in college was excellent - but if he had shown this video before tackling entropy, I bet it would have sunk into my dense noggin more quickly. Great work! (I'm now subscribed)

Kathy, you are awesome. Loved your video!

@Kathy_Loves_Physics

2 жыл бұрын

Thanks 😊

Nicely done, Thanks.

Why are many students afraid of science? That's because they do not hear about the story of the real humans behind the discoveries and their thoughts, emotions, struggle and finally, success. Thank you Kathy for changing that. I hope the next generation show more interest in Science + History

So good!!! Thanks for making these videos

@Kathy_Loves_Physics

4 жыл бұрын

uberfun2000 you are welcome

Wow. Fantastic video.

I Just love ALL your videos, and I tend to watch several times some of them..;) thank you for your work, and keep doing it. hugs from Brazil.

I just.....don't know how to say thanks. You know, it's easy to listen to that voice that says "Your interests are niche. Nobody else likes history AND physics." But an understanding of physics is not just an understanding of its mathematical basis. It's also an understanding of how the development of physics is a history in itself. These types of conversations are so valuable - it makes the mathematical basis understandable on a human level.

@Kathy_Loves_Physics

2 жыл бұрын

I like to say that “science is personal because scientists are people.” I don’t think our combined interests in history and science is niche at all. In fact, I have never met a scientist or engineer who wasn’t at least a little bit interested in the history because if we want to know how things work we also want to know how we came to that conclusion. It is only our education system that has decided that it isn’t hard science if we talk about history too.

Just found this channel. Love it. Nice Talking Heads reference!!! We're getting old.

I am but a simple old man, I thank you for adding value to my life with absolute clarity. Ma’am you are one of a king I thank you. .Nico

@Kathy_Loves_Physics

2 жыл бұрын

Thank *you* that was lovely 😊

What a fantastic channel, how could I ignore it?

How good are your videos! Thanks.

I'm living for Entropy, but the older I get, the more I love the order ^^

Outstanding videos. I just started watching. Chemistry major.

Thanks for the history, I really enjoyed it.

This is an awesome video and channel. Going to end up whatching all your videos starting with the one on Tesla. Really good videos!! Keep at it and hope you and everyone are well.