4B70.60 - Adiabatic Invariant
Bounce the Ping Pong ball between the paddle and the table. As you make the table to paddle distance smaller, the frequency of the bounce goes up even though the velocity of the ball remains relatively constant.
- M. G. Calkin, "Adiabatic Invariants for Varying Mass", AJP, Vol. 45, #3, Mar. 1977, p. 301.
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