Thanks U-238.
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Posted on 03/06/2012 1:16:25 AM PST by U-238
Thanks U-238.
The finer point is that a photon is a fundamental quantum particle....it has no mass at rest. The radiometer works because the vanes you mentioned are both dark and light ( usually black and white) and the heating of them is differential which causes the spinning.
Photons have been observed to behave as both particles and waves which is why the duality of light is such a difficult concept to teach to beginning physics students. Theoretical constructs can be useful but this was derived by scientific testing
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