Recent content by wxhoho

Respect to the middle of the line, it's right that the total angular momentum of the system is zero(cause the angular velocity is zero), please verify that the angular momentum is still zero after the collision respect to the same point.

I've just been pushed to start my career in the field of condensed matter physics but I still know nothing about even reciprocal lattice. This is a nice forum for learning and discussion. If someone has question in computational physics (python, C) or tough mathmatics， I may have an answer.