In Reply to: RE: Pointing Laser pointer at the TV screen any DANGER ? posted by baguadao on December 20, 2008 at 17:23:09:
A laser emits coherent light. The "waves" are synchronized.
LEDs (ordinary, not laser) emit incoherent light, like a flashlight with an incandescent bulb.
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Follow Ups
- RE: Pointing Laser pointer at the TV screen any DANGER ? - blue_z 15:31:08 12/21/08 (0)