Lecture 8 | Modern Physics: Special Relativity (Stanford)

[Neo55378008]

I was interested too in why B is used for magnetic field, so I googled it for my students. When Maxwell wrote his papers, he listed his topics, and then lettered them. The vector potential was the first thing he talked about, then the magnetic field (hence A and B) :-)

[nirdeshreddy92]

thank u for the upload

[huntmatuk]

Shouldn't it be curl E=-\frac{\partial B}{\partial t}?

[WizardofCalculus]

If you notice, he put a minus sign on dE/dt . This would suggest to me that he's using a different sign convention, rather than the usual one.

[huntmatuk]

@WizardofCalculus I should have waited before I posted!!! I wasn't aware that it was possible to change the sign convention. I first came across electromagnetism in my geometry course as a curvature of a line bundle.

I am doing another course in the maths departtment at UCL, and he spent the first third talking about distributions!! I think I will need to go to the physics department!!!

[luzzie9]

So the flow of charge, the continuity equation, is a direct consequence fg local phase or gauge invariance? There is a mystery here that no one, including Dr. Susskind, really understands.

[dividebyN]

Excellennnt!!!!

[nuetronandelectrons]

The professor Is the Best. Period.

[ydox]

there are only 8 lectures?

[system0system0]

Leonard Susskind is wasting his time . its sad , let him do his work the man knows more .

This is somthing that a person can get in a day fucking waste of time

[69erthx1138]

Dr. Susskind is a great teacher in these areas, a master of his field.

[ispaniola]

Thanx alot!

I now know KUNGFU!....

[SomeUser9753]

I studied this stuff when I was a sophomore, but it was not a physics course. Sorry to disappoint you but STR is wrong, it's a lie to keep people blind.

[kwrzxm]

Wow he really draws you into the material.

Great professor, why can't all professors be like him haha

[nirvana1108]

Thanks a lot professor Susskind. Your lectures were really helpful!