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Do photons collide?

Hi
yesterday while testing a couple of projectors which are going to use some kind of edge blending, two persons (out of about 8) asked me if wasnt it a problem that the 2 beams mixed up at some point in their path.
:)
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I had that question a couple of times too :) it can be fun to get them wondering what will happen when the beams intersect.

i think, in that case, the photons behave more like a wave than like tiny particles - and don’t collide.

I fear that the children watched the old Ghostbusters movie.

@westbam
nice quote ‘Ghostbuster’ aahahha