The ‘Singing Cymbal’ Controversy

found online by Raymond

From The Journal of Improbable Research:

…from a CERN teaching resources video (2014).

“Use a cymbal or metallic plate that can vibrate freely. Use a flash, for example from a camera, hold it close to the plate and flash. You will hear a low tone.

Physics: The moment of the photons are transferred in an inelastic collision to the atoms of the cymbal. This can also be used as an example of energy conversion.”

Not so fast, say Thomas R Moore, Samantha Collin and Nikki Etchnique of the Department of Physics at Rollins College in their paper ‘The singing cymbal : Is it really photon momentum?’

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