# Quantum bouncing ball

1. Jan 23, 2008

### supakorn

if a ball of mass m moving under the potential : V(z) = mgz for z > 0 and V(z) = $$\infty$$ for z $$\leq0$$.What is the value of T : (Transmission coefficient)?

i get : T = 0

2. Jan 23, 2008

### vanesch

Staff Emeritus
Eh, yes, of course.