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"Stefan Patric" wrote in message
news On Mon, 22 Aug 2005 10:41:40 -0700, Rich wrote: Has any progress been made on this kind of thing yet? Something like on/off opaque LCD windows that could be used as shutters instead of metal ones? These have been around, since the late 40's or 50's. IIRC, they were called quantum shutters, had no moving parts, were optically triggered, and were originally developed to photograph the above ground nuclear bomb tests in Nevada. I think Harold Edgerton, an MIT physicist, was involved in their development. (FWIW, Edgerton is the father of the high speed electronic flash that we take so much for granted today.) He, along with two other scientists, formed the company EG&G (the "E" is Edgerton), to design and build cameras and shutters to take extremely short duration (millionths of a second) exposures of nuclear detonations or anything that happens really fast. Stefan I think that you are referring to the "Kerr Cell," which dates to approximately 1875. Theoretically, exposures down to less than a millionth of a second are possible, and have been routinely achieved. Do a web search for an exact match on the string Kerr Cell And you will find roughly 5,000 "hits," including http://www.elec.gla.ac.uk/groups/opto/Kerr.html http://www.elec.gla.ac.uk/groups/opto/Kerr.html http://www.iop.org/EJ/abstract/0022-3735/21/6/010/ http://www.iop.org/EJ/abstract/0022-3735/12/8/026/ quotes making a light pulse of 1 nanosecond duration ... the time it takes light to travel one foot. Now ... THAT's fast! http://kerr_cell.bluerider.com/wordsearch/kerr_cell etcetera, etcetera, etcetera |
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