If a laser beam is a focused beam of light, then how does some of it find its way into my eyes? On the other hand, if I’m seeing it the way I see everything else, does that mean photons are bouncing off of it into my eyes? Do photons bounce off photons?
In: Technology
Most laser beams are actually invisible, and those that are visible are usually made deliberately visible for show. Generally speaking beams are visible when they’re shot through a non clean medium with many particulates for the beam to bounce into and off of. It can be anything from dust particles to the humidity in the air, smoke and whatever else may be floating in the air. You’re seeing the light bounced off of those particles that finds its way into your eyes.
This is also one of the biggest problems with lasers. They lose a lot of energy over distance very fast when they’re shot out in the open for this exact reason. A lot of their energy is lost by bouncing into floating stuff.
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