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I was looking around online and stumbled across this interesting story: Laser Beam Array Terra 3 Terra-3 - Wikipedia, the free encyclopedia Sort of has me wondering what sort of power and mrad would be needed for a laser to even be visible from low earth orbit ~200km. Its too bad the mission...

I have a 50mw with no IR filter. I realize that I could add one relatively easily, however I had a question about the nature of the excess IR. My understanding about what makes the green unsafe is that laser safety goggles are useless against it and it's invisible so the eye doesn't react to the...

I recently got this: Ultrafire host portable green laser /outdoor hunting [OLUGL50] - $36.99 : Welcome to O-Like.com, Your source for laser products 50mw green from O-like. I was not aware that they did not come with chargers like my red did. According to the website it lists working voltage...

I would like to test the range of a 200mw red by mounting it on top of a pair of binoculars and then shining it at a cliff face or carefully aiming at a cloud. Is there any danger of viewing the point through a spotting scope or binoculars? What gives me cause to wonder is that my binoculars are...