Thread: green laser?
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Old November 23, 2005, 06:18 AM   #5
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Join Date: August 21, 2005
Location: Ahyah
Posts: 290
visible beam

One of the hallmarks of a green laser (supposedly, i haven't seen one in person) is that the actual beam is visible when the ambient light is low. This was called out as a benefit for nature lovers that want to 'point' at things (such as stars, trees, etc) that may be too far away to pickup a red dot.

If you've ever tried to track down the source of the red dot on your shirt, however, you can imagine why that specific 'feature' would probably be much less desirable in a laser sight

(edited to add: I don't know why the beam is visible, assuming that the additional sensitivity in the human eye to that wavelength allows you to see the beam being reflected off of dust particles, water vapor, etc)
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