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From: jimp on 27 Jan 2010 14:04 In sci.physics Bret Cahill <Bret_E_Cahill(a)yahoo.com> wrote: > Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a > red reflector lens at night and it explodes into color. > > Slender reflective fibers would easily reflect a relatively low power > satellite based laser a couple hundred miles back to the satellite and > show up on satellite imaging. A very weak magnet on each fiber could > orient the fibers in specified directions with respect to the earth's > magnitic field it the time it would take to fall hundreds or thousands > of feet from a plane. Wind and aerodynamics are much stronger forces than the Earth's magnetic field. -- Jim Pennino Remove .spam.sux to reply.
From: Bret Cahill on 27 Jan 2010 22:25
> > Shine a 4 milliwatt 645 nm wavelength dollar store pet laser onto a > > red reflector lens at night and it explodes into color. > > > Slender reflective fibers would easily reflect a relatively low power > > satellite based laser a couple hundred miles back to the satellite and > > show up on satellite imaging. A very weak magnet on each fiber could > > orient the fibers in specified directions with respect to the earth's > > magnitic field it the time it would take to fall hundreds or thousands > > of feet from a plane. > > Wind and aerodynamics are much stronger forces than the Earth's magnetic > field. And? Bret Cahill |