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Happy and Unhappy Balls in Infrared H-b6c
An infrared camera shows the temperature rise in the unhappy ball as it is repeatedly hit with a wood block; the effect is much weaker in the happy ball. Fishbane Chapter:   5.2 SJ 3rd Chapter:   5.1 PIRA DCS classification:   4B60.150

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Physics Lecture Demonstrations at the Department of Physics and Astronomy
The Johns Hopkins University