Lecture 1: Introduction to Thermodynamics

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@mitocw 5 ай бұрын

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/ KZbin Playlist: kzbin.info/aero/PLUl4u3cNGP61g-yRbJz4ghFPJLiok1HxX 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 KZbin 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.

@AvaBrown-uc9uq 5 ай бұрын

Great Video! Below are the timestamped summaries from ChatWithPDF: 00:00🧠 Lecture introduction to basic principles in thermodynamics using interactive methods with a fun approach. 02:33🎨 Drawing a cartoon of noninteracting gas molecules in a box, showing how they spontaneously distribute in space. 06:10🔄 Discussing statistical likelihood in thermodynamics with examples of ball distributions and entropy. 08:44📚 Explaining the concept of entropy and how things move from low entropy to high entropy in the universe. 11:11🌡 Exploring solutions in thermodynamics, demonstrating endothermic and exothermic processes with hot and cold packs. 13:31❓ Clarifying the exchange of entropy in systems and discussing Maxwell's demon as a thought experiment. 16:07🌀 Describing the process of diffusion in noninteracting and interacting molecules, leading to changes in entropy. 18:57🧪 Performing experiments with hot and cold packs to illustrate endothermic and exothermic reactions. 21:17📊 Introducing phase diagrams as a tool to communicate material balance and equilibrium in different systems. 25:01🎯 Emphasizing the importance of phase diagrams for understanding material behavior under varying conditions. 27:16💻 Exploring the use of computerized tools like CALPHAD to calculate phase diagrams for practical applications. 30:52🌡 Discussing the balance between entropy and energy in different systems through phase diagrams. 33:01🌡 Conducting experiments with hot and cold packs to demonstrate the effects of endothermic and exothermic processes. 35:42🧊 Observing the outcomes of endothermic and exothermic reactions using hot and cold packs. 38:24🔬 Introducing phase diagrams as a visual tool to communicate material balance and equilibrium in different systems. 41:19📈 Explaining the significance of phase diagrams in material science and engineering decisions. 44:07🔍 Detailing examples of phase diagrams such as water, binary, ternary, and Richardson-Ellingham diagrams. 46:14🔄 Discussing the complexity and utility of phase diagrams in understanding material behavior under different conditions. 48:27🛠 Highlighting the application of CALPHAD software for calculating phase diagrams in practical engineering scenarios. 50:37📚 Outlining the structure of the thermodynamics course, focusing on equilibrium, phase diagrams, and foundational concepts. 52:38🤔 Sharing a quote by Arnold Sommerfeld about the complexity of thermodynamics and the learning process.

@andreandes7485 5 ай бұрын

This is my dream course to take. I’ll be back in about a year after I do all the prerequisites

@vasdgod 5 ай бұрын

Thermodynamics of metals like insulators which handle high heats . This lecture is informative intro to it . Thanks MIT.

@burnere633 5 ай бұрын

Is this actually from 2021? 1. Video quality doesn't shout 2021. 2. What were students doing *inside* a classroom in 2021, all sitting so close to each other?

@RagHelen 5 ай бұрын

When he says around 9:00 that is unlikely for the air in the room to be suddenly gathered in one corner: You would need to invest energy and work to accomplish that by intention. But the probability he is talking about is ground in parts per space.

@denisvincent8866 4 ай бұрын

What happens if the endothermic reaction happens in an insulated container? Will the reaction cease to happen?

@joro8604 5 ай бұрын

Great explanation.

@denverbraughler3948 3 ай бұрын

MIT needs to standardize the titles of their videos. “Lecture 1” is a thoughtless name. The title needs course ID, year, lecture number, course name, and topic.

@kushagra64 5 ай бұрын

3:59 now that's funny XD

@anggalol 5 ай бұрын

Please do more math courses

@Ommygee007 5 ай бұрын

Please we need med class lectures.....apart from that woman🙏🙏🙏🙏 Please get it for me

@space-time-somdeep 5 ай бұрын

❤

@coincrazy3563 5 ай бұрын

should

@christophergame7977 5 ай бұрын

Putting the cart before the horse. Talking about molecules and statistical mechanics when the announced topic is thermodynamics.

@freyc1 3 ай бұрын

Are you coming from the 19th century?

@christophergame7977 3 ай бұрын

@freyc1 Yes, indeed, thermodynamics was settled by 1875. Statistical mechanics uses entirely different forms of reasoning. It is a mistake to confuse between the two. One can sometimes solve a problem by simple thermodynamic reasoning that one cannot solve by statistical mechanics. On the other hand, some problems can be solved by statistical mechanics that cannot be solved by thermodynamics.

@freyc1 3 ай бұрын

@@christophergame7977 That's why the modern formulation of both thermodynamics and statistical phsyics uses the same basis. It is quite pointless to develop thermdynamics as it was done before the existence of atoms was accepted. It's easier to understand the laws of thermodynamics by understanding how they are a consequence of what happens at a microscopic level.

@christophergame7977 3 ай бұрын

@freyc1 I can see that you like statistical mechanics. It is a nice topic. It provides admirable explanations of the facts set out in thermodynamics. The explanations are necessarily very much more complicated than the simple thermodynamic facts. In many particular cases, the complications are overwhelming, so that the problem cannot actually be solved in straight statistical mechanics. Then one still has the outlines clearly set out by straight thermodynamics. If the student is taught from the start through statistical mechanics without a grounding in thermodynamics, he is likely never to grasp the power, simplicity, and elegance of straight thermodynamics. There are times when it is unfortunate to be unable to see the wood for the trees.