Just a little oddball observation that I wanted to share. A previous poster mentioned designing a visual laser detector. As in being able to "see" the beam. I was fooling around with my Bushnell Laser Rangefinder tonight, and I thought I would see if putting my Sony videocam in NightShot mode would show anything. Normally, the laser is invisable as is the targeted dot. Through the camcorder in NightShot mode, I still could not see the beam, but I could clearly see the dot where it was aimed. I thought this was very interesting. Normally, you can only see the actual beam of a laser if there is some sort of moisture or other element present in the air, so I wasn't expecting that. However the usually invisible dot was very clear. I wonder if this could be extrapolated into a usefull device for spotting laser at a distance?