Re: why water caste circular shadows on the bottom of container it is placed

Date: Tue Jan 17 13:57:26 2017
Posted By: Tom Hancewicz, Sr. Scientist, Spectroscopy and Analytical Science
Area of science: Physics
ID: 1483523423.Ph

Message:


It is most likely a refraction phenomenon from the divergent light rays due
to the "V" shaped surface of the swirling water. There is a good article on
such phenomenon at the following website: http://optica.machorro.net/Optica/SciAm/PoolShadows/1988-07-fs.html

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