Yes, but if each mirror can only reflect back 99% of the incoming light (most high end telescope mirrors do worse) the image will become impossibly dim long before the 30,000th reflection.
Mike Fowler Chicago If two mirrors are 1 km apart you'd have to look back to the 30,000 th reflected image to see the light still on while the light is off, by a tenth of a second. You also need to cut the light quickly. Bulbs are too slow. Maybe an electric arc with a nanosecond surge protector, as can be purchased. Deliberately surge, and in a nanosecond the arc is off. Get a very bright source; you are looking at 30,000 km. of reflections. So using two "infinite mirror" effect mirrors as a "time machine" to look back one tenth second and see one light on after it is off is just barely do-able, it would seem, using some big mirrors and a nice big field on a dark moonless night, and careful alignment to insure perpendicularity (the curvature of the Earth would have to be accounted for). Francis Graham ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
