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How Far Can A Laser Pointer Travel. How far can a laser pointer go?, title: The divergence of the laser determines the beam width at distance and if narrow enough (as it should be for a common 1w 450 nm pointer) you should be able to see the beam from the side for a few miles.

“I1”Laser pointer presenter on Behance
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If you know the power, divergence and wavelength (precise color) of a visible, continuous wave laser, you can use the online calculator below to determine the eye hazard distances nohd and ed 50, and the federal aviation administration visual interference hazard distances szed, czed and lfzed. (infinitely as much anything can go infinitely in the real universe.) how far before it just becomes too diffused and ends up like a flashlight? Still, the narrow beam will spread out over long distances.

“I1”Laser pointer presenter on Behance

27/03/2008 19:40:14 » taking the curvature of the earth into account, you'd be hard pressed to shine it on anything 50 miles away except an aeroplane. Both are important factors determining how far a laser beam can be visible for. Many people think that there would be issue. In fact, lasers can even be detected or seen by airplanes in the sky.