47-50 rockefeller center station

Bertrand n=-2n=1 LRL.

LRL \mathbf {A} intuition argue 1-5 6

LRL [] P.S..

LRL \ (d\mathbf {A}/dt = 0)

LRLSO (4) .

LRL

lol Laugh out loud.

--LRL j x i = {2 x i x j x i x j.

-Lenz vector

V1450.