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Entropy

MIT RES.TLL-004 STEM Concept Videos View the complete course: http://ocw.mit.edu/RES-TLL-004F13 Instructor: John Lienhard This video begins with observations of spontaneous processes from daily life and then connects the idea of spontaneity to entropy. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu 0:00 Introduction 0:51 Prerequisite Knowledge 1:02 Learning Objectives 1:18 Spontaneous Processes 3:04 2nd Law of Thermodynamics 3:22 What is entropy? 3:31 Molecules interact and transfer energy 4:21 Distributing Energy 4:42 Possible sums for a pair of dice 5:18 Dice combinations for each sum 6:14 Heat Diffusion Set-up 6:54 Vibrations in a solid 7:24 Energy transfer 7:46 Evaluating entropy change 9:21 How many different microstates (2)? 10:32 Change in Entropy 12:25 To Review