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
You can only see a laser beam if it passes through a medium with stuff in it, like dust or fog.
Some of the laser light will then bounce off the small particles of dust, or the water droplets in fog, and end up in your eye which is why you can see the beam.
A laser beam that’s passing through a vacuum is invisble until it hits something.
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