Recent content by Meir Achuz

What a weird response

Reading this thread, I see why students always get a third law question wrong.

How could there be 81 posts on this?

Anything below Griffiths would be about QM, but not QM. That's why they are easier.

The confusion is due to SI units where B and H do have a complicated connection. In Gaussian units, H is just B-4\pi M, where M is magnetic polarization of matter.

This image may help. The brother on Earth follows the vertical line. The traveling brother moves out the x-axis, and then returns. On a map, he would have traveled further. But, in space time, s^2=t^2-x^2, so he has traveled a shorter space-time 'distance'.

Not on a boat with a well balanced jib. I can sail upwind with my hands off the tiller

Try to make a sensible second picture, labeling things. What are B and C?

Depending on the type of beta decay, the electron and neutrino spins will be entangled.

Comparing Griffiths with Landau should be done tomorrow.

Higher editions sell more new books, and shuffle the problems. A publishing contact generally gives the Publisher the right to demand a new edition. Jackson 2 is better than Jackson 3. Each new edition of Arfken went downhill.

It's funny that some people prefer graphs, and others, like me, prefer equations. There are many functions that look like those graphs. The important thing is the square root.

Eq. 2..31 is just Gauss's theorem.

See attached.