HARRY999...The most significant "negative-result"experiment ever performed,This baffling result was put to bed by Einstein after publication of "Special Theory" in 1905.Again this notion that light propagated through the "Ether"until the lack of "fringe-shift" proved otherwise ...Some readers will be unfamiliar with terms such as "Inertial Frames of Reference" if we continue with this thread,then perhaps, we should start with what relativity is all about, for readers who are interested but have not been exposed to the concept before...Any takers???