Timeline for Quantum Number of a Tennis Ball
Current License: CC BY-SA 3.0
2 events
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| Sep 20, 2013 at 3:52 | comment | added | Andrew | To clarify some things from this response: You are correct that the ball will not be in an exact energy eigenstate. Instead it will be in a superposition, we can think of it as a gaussian wave packet centered on $E_n$ (where n is large). Similarly the wave function in position space will be peaked around a given $X$, and in momentum space it will be peaked around a given $P$. The widths will all be small, since we are in the classical limit. $\langle X \rangle$ will not be constant, it will follow the classical trajectory of the tennis ball (this is Ehrenfest's theorem). | |
| Sep 20, 2013 at 2:05 | history | answered | Brian Moths | CC BY-SA 3.0 |