Classical Mechanics | Lecture 9

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1. as we reach...particle physics..the density of equation that he writes on the whiteboard becomes really less...maybe because the equations are too intricate....
2. I like the way he brings the 'neutrino travelling faster than light' joke in every lecture :)
3. Susskind talking while eating — facepalm
4. 😫 all this talk about vectors made a nigga sleepy
5. man this shit got way mo heavy from possom brackets.
6. the fuck is charge density?
7. For those wondering about the factor of 1/c : it is my understanding is that it's due to the way "e" is define. You get the 1/c when define e (aka Q) using  F=Q1 * Q2 / r^2   (notice here that Q is defined in terms of mass, length, and time).  You lose the 1/c in the lorentz force eqn when you define e as it's own elementary unit (and along comes 1/4*pi*epsilon for the ride).
8. Magnetic monopoles have been recently discovered. http://www.nature.com/nature/journal/v505/n7485/full/nature12954.html
9. thank you sir! appreciate it
10. At 23:20 in the next class, Susskind explains that this is just a number, so it all depends on the way you define your unit of charge. He just uses to write this 1/c factor.
11. when i learnt the lorentz force, it was e(E+v x B) , how come there is a factor of 1/c there and why?
12. Heh, wouldn't you know, Levi-Civita *was* Jewish ;-) en . wikipedia . org / wiki / Tullio_Levi-Civita
13. chapters 2 and 3 of volume 2 of the feynman lectures teach vector calculus very well
14. great lecture! following...
15. Sir, you might not know how much you mean to a guy like me......who likes physics just for its own sake!!! 
16. You are a gem sir !!
17. Thanks!