Homework Statement
Use the dispersion relation to find the group velocity v_group and phase velocity v_phase.
Homework Equations
omega(k) = [(hbar)k^2]/2m
The Attempt at a Solution
v_group = domega(k)/dk = [hbar]k/m = h/m lambda = p/m = v
This isn't right.
v_phase = omega...
Homework Statement
Coherent light is passed through two narrow slits whose separation is d. The second-order bright fringe in the interference pattern is located at an angle of theta.
If electrons are used instead of light, what must the kinetic energy of the electrons be if they are to...