- #1
ognik
- 643
- 2
Homework Statement
Consider a wave packet satisfying the relation ## \Delta x \Delta p_x \approx \hbar ##
Show that if the packet is not to spread appreciably while it passes through a fixed position, the condition ## \Delta p_x << p_x ## must hold.
Homework Equations
## p_x = m \ddot{x} ##
The Attempt at a Solution
I feel I am missing some information, I wote down ## (x - x_0)(p - p_0) = (x - x_0)m(x - x_0) \approx \hbar ## ... can't see how to apply the inequality usefully?