11Sep/09Off
Pointer Beam
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Pointer Beam
The Article was not found...
If we point a parallel laser beam (from a laser pointer) from space into space, how far will the beam go ?
I don't see any reason for its intensity to decrease over distance. Pl. comment.
Shouldn't it's intensity remain same even if it travels huge distances ?
A laser beam is not perfectly parallel, and DOES widen with distance. In that respect, it's no different qualitatively than a flashlight beam even though it diverges at a lesser rate.
1 watt Spartan 447nm Laser Pointer - Beam & Burning Demo