Jared McCaffery writes
> Fiber optic tubes are the thin plastic tubes often used in fiber optic
> decorations like false plant and light displays or fancy Christmas tree
> toppers, etc. Fiber optic tubing and cable is also used, in many
> different forms and factors, in the electronics industry. Light enters
> one end of the tube, reflect off from the insides of the tube until it
> reaches the other end, then exits the tube and is "focused" as a pinhole
> would be. You could think of it as a very long pinhole (not wide, but
> long rather). ..... rest of message cut.....
Fiber optic cable that is meant to just transport light won't
preserve an image because the fiber strands are not kept
in alignment. Endoscopes and things like that have to be
made in a special way to keep the fibers aligned.
A single strand might work as a pinhole, somebody should
try it.
