Tony Moss wrote: > >I found a couple of web sites on signal mirrors. > >http://www.equipped.com/signal.htm#ReflectionsOfLight > >describes how they work and how to use them. I also made a sketch of how > >I think it works. The attached bit map file shows this. > > I understood the principle immediately from your diagram. 'One picture > is worth 10000 words'
Well, I'm sorry, but I haven't caught on yet. Bob refers twice to an image of the sun, but I don't see from his diagram how or where any image of the sun should be visible. The web site explains, "The fireball is produced by retrodirective reflection from small metalized glass spheres adhered to a mesh grid or cloth disk with a center hole." I could understand it if the reflective material consisted of needles or flakes perpendicular to the plane of the mirror, but spheres don't seem to be direction specific enough. Wouldn't they look bright regardless of the orientation of the mirror? Please try to share your insight! --Art Carlson
