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May
4
comment Why is the (nonrelativistic) stress tensor linear and symmetric?
The stress tensor is a function a given $n$ to $T(n)$. The equality you are describing refers to integration over a surface $S$ with varying $n$s. How from that equation over general $n$s I get some reasoning about a given $n$? Thanks!
May
3
comment Why is the (nonrelativistic) stress tensor linear and symmetric?
I like the method in this answer, but still missing some details. In the first part, is there implicit summation over $j$? More importantly, a volume element with surface $S$ has a changing $n$; how does the stress tensor enter this calculation?
Jan
9
comment Good book for Analytical Mechanics
This book explicitly deals with differential geometry, which I would like to avoid.
Apr
3
comment Photon hitting an atom with higher energy than needed to ionize
So will the photon be absorbed completely and the electron will have the excessive energy (as kinetic energy)?