Recent content by StevieMurray

Homework Statement ds^2 = g_{tt} dt^2 + g_{tx} (dt dx + dx dt) with g_{tt} = -x and g_{tx} = 3 "Show that this is indeed a spacetime, in the sense that at every point, in any coordinates, the matrix g_{\mu \nu} can be diagonalized with one positive and one negative entry. Hint: You...

Nevermind. I took a long hard look at the 3D structures and it seems to be (mostly) correct.

I'm reading the part about phonons in diatomic bases on pages 95-99 in the 8th edition. I might have confused myself but it seems like Kittel switched the directions for the NaCl and CsCl structure around on page 97. CsCl is a crystal with a simple cubic lattice and a basis of Cs at 000 and Cl...