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- Mar 1, 2008
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So my main understanding of light over my life was that it bounces off objects and into our eyes, which is why we see an image. But for some reason, that logic (to me anyway) doesn't explain why a laser beam is more illuminated viewing front on, than it is viewing from behind. I mean, to my logic, the laser beam should leave the diode, bounce off the particles of air and into our eyes. But if the back of the particles of air is being struck by light, why is it the opposite side that's most illuminated? I mean, the laser beam is going past your head, so your eyes aren't being directly struck by the light, what is it about light that makes it so visible viewing from that angle?