Thermodynamics 3 - Heat Transfer

This is the third video in the Thermodynamics sequence. Having already introduced the concept of heat in the previous video, here we talk more about the transfer of heat from one place to another. Conduction and radiation are two methods of energy transfer that don't involve the motion of matter. The former is the transfer of energy through direct physical contact (the molecules bump into each other during their thermal motion) and the latter is the transfer of energy over long distances without a transport medium through the emission and absorption of light.

A proper treatment of either conduction or radiation is beyond the scope of these videos. So we content ourselves with just introducing and motivating, when possible, the relevant equations. The important thing is to develop some intuition for how the physics works without diving into the deep end of the theory. That's not necessarily a bad way of doing things. It's like empirically discovering a law before theoretically deriving it, and for most of the history of physics that's the way things were.

This video is part of a series on introductory topics in physics. The target audience is beginning college students who have already had one semester of Newtonian Mechanics.

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Category:

Education

Tags:

• conduction
• radiation
• thermodynamics
• heat
• transfer
• stefan
• boltzmann
• conductivity
• thermal
• contact
• equilibrium
• course
• lecture
• review
• physics

[immortal6699]

ur good man! that was great...

and after khan academy this compliment dont come easy

[dcderek24]

great video. good teacher.

[Laminaricflow]

Pretty good teaching! but you need to tune up the sensitivity of the mic somehow, because the volume of the video is too low.

[lovbinfr3sh]

great

[bozellandbuckley]

This is fantastic. Your clarity and brevity would make most professors jealous. Your use of examples is also excellent.