Lecture 1: Introduction to Thermodynamics
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- čas přidán 10. 09. 2024
- MIT 3.020 Thermodynamics of Materials, Spring 2021
Instructor: Rafael Jaramillo
View the complete course: ocw.mit.edu/co...
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This first class session introduces entropy and spontaneous processes, molecular interactions, and enthalpy, as well as the scope and use of thermodynamics.
License: Creative Commons BY-NC-SA
More information at ocw.mit.edu/terms
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We encourage constructive comments and discussion on OCW’s CZcams and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at ocw.mit.edu/co....
MIT 3.020 Thermodynamics of Materials, Spring 2021
Instructor: Rafael Jaramillo
View the complete course: ocw.mit.edu/courses/3-020-thermodynamics-of-materials-spring-2021/
CZcams Playlist: czcams.com/play/PLUl4u3cNGP61g-yRbJz4ghFPJLiok1HxX.html
This first class session introduces entropy and spontaneous processes, molecular interactions, and enthalpy, as well as the scope and use of thermodynamics.
License: Creative Commons BY-NC-SA
More information at ocw.mit.edu/terms
More courses at ocw.mit.edu
Support OCW at ow.ly/a1If50zVRlQ
We encourage constructive comments and discussion on OCW’s CZcams and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at ocw.mit.edu/comments.
My favorite part of the lecture is every time he raises all boards on the right side just to see the words "Right" and follows up with an auditory "Right"
Me too
Lemme add a new law:
The number of people thankful for your content always increases.
truly feels like education and knowledge, nothing unlike the current rushed iit preparations
thanks a lot. That is the real example of how teacher should teach in high school
19:41 The idea that glass is liquid is a common misconception. It doesn't actually flow. Old windows sometimes not being of uniform thickness is a result of imperfect manufacturing by the methods of the time, not due to flow over time.
I believe it depends on the type or makeup of the glass but it's classified a an amorphous solid that can flow but very slowly, hence some referring to it as a liquid.😊
From the beginning I think this is going to be great 😁
I would be curious about the formation of the solar system system where via gravity it would seem to decrease entropy. I don't know if this is a valid point of not.
Physicist here. That’s an excellent question! The answer is that when computing entropy, you need to consider not only the arrangements of the particles’ positions, but also their velocities. Solar system formation is *really* complicated involving magnetic fields and various radiative processes, so let’s think about a super simplified system to get the basic idea. Air is less dense at the top of a mountain than at sea level, but how is that possible when the 2nd law says the particles should be distributed evenly in space, just like the balls in the box are distributed equally between sides of the box? Well, suppose the air molecules *were* distributed evenly, with the same density at all altitudes. For that to be sustained over time, the molecules at the bottom would need to be biased towards high velocities, so enough of them have sufficient energy to fly up and replace the balls falling down from the top. To get a uniform distribution in position (altitude) you’d need a very *non-uniform* distribution in velocity, which is highly improbable. Nature finds the state that maximizes the entropy, taking in into account both position and velocity, and you get a distribution that’s a bell curve in velocity and a decreasing exponential in altitude.
The same general idea is also behind how molecules can form out of atoms, and how proteins form. When there are inter-particle forces, the response to those has to be accounted for when computing the entropy. There’s a computational tool for this, called a “free energy”, that’s used to find equilibrium states in the presence of interactions between particles (expressed in terms of an energy function) and also interactions with the environment.
That’s how a star plus universe can have higher entropy than a gas cloud plus universe Things get even more interesting when you consider non-equilibrium processes, needed to understand how that happens. There you get into dissipating structures. Which are ordered structures that form temporarily and result in increasing the total entropy of the universe. Examples are spiral arms in galaxies, tornados, convection cells, and living organisms.
Hope this helps.
Dissipative structures, not dissipating. Damn autocorrect 😂.
Is this course about statistical approach to Thermodynamics?
I have a doubt suppose there are 6 balls In small container . They make more collisions when we expand container the balls goes farther way and hence the collision frequency decreases. Therefore randomness decreases so why would that happen.
This course looks intresting,i like those who try to make things simple ,i added it to my playlist. For later❤
Is this course for mcat preparation??
Favorite chem e class
Where are rest lecture 2016
The course note says, "Lectures 12 and 25 will be added soon." There are also lecture notes and readings for lectures 12, 25 on MIT OpenCourseWare at: ocw.mit.edu/courses/3-020-thermodynamics-of-materials-spring-2021/. Best wishes on your studies!
Muchas gracias ❤
Great
Why as an adult I completely understand everything he's saying and the formulas but in school I sucked at algebra but now understand calculus and most scientific papers and most math problems........
Because there isn’t any algebra involved. These are solved equations.
@@samuel9607 lmaoo
I am from India ❤
38:41
20:25
I tought this film was from the 80’s just like Walther Lewin’s. But it’s from 2021
9:30
10:04
Hi guys...😢😢😢
i am now a physicist off of youtube 👍
Sup
Why are you always pulling the board just to read the word RIGHT.👍👉▶️↪️🤔is that entropy🫰😊😀