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James Clerk Maxwell, in 1861–64, published his theory of electromagnetic fields and radiation, which shows that light has momentum and thus can exert pressure on objects.

Radiation pressure in classical electromagnetism:
... it was published by James Clerk Maxwell in 1862,and proven experimentally ( 1900 - 1901)
> http://en.wikipedia.org/wiki/Solar_sail

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Full screen picture
http://3.bp.blogspot.com/-nCDH5-n3VTU/VT2AQ_J2eBI/AAAAAAAACV8/RuuDYzzBh3s/s1600/11.png

First test Poland 2012
http://3.bp.blogspot.com/-mfX1X9yDqDw/VLuo2Th_6_I/AAAAAAAACNQ/YaGD36e4PRk/s1600/mar.jpg

Last edited by newton; 04/27/15 12:29 AM.