Hi,
I was wondering if it is possible to say shoot two particles, first one and then another one at slightley greater speed so that when they collide (the second one catched up with the first) create a short lived dot of visible light?
Why am I wondering this you might ask...
Well I was talknig to a friend about sci-fi movies and we really wondered when someone would create the kind of holograms that we see so often.
My idea for this was to have one or several very fastley rotating "emitter" that can shoot two particles that when collide creates a photon.
The delay of the second particle would create a collition at a certain distance and the emitter would though software change angle, combine these two and you have 3d coordinates.
This would allow the device to create dots (3d pixels of sort) of visible light at certain distances and angles and in that way creating a hologram that dosn't need to be projected on anything.
Would this be possible?
If so what do I need to build one?