http://en.wikipedia.org/wiki/Albert_Abraham_Michelson
http://www.aip.org/history/gap/Michelson/Michelson.html
_ Albert Abraham Michelson
http://www.youtube.com/watch?v=sEa-qUOGLNQ
_ Extended Michelson-Morley Interferometer experiment.
http://www.youtube.com/watch?v=7T0d7o8X2-E
