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Falzon03 OP t1_j344tb0 wrote

Reply to comment by Captn_Porky in Holographic tech coming soon to businesses by Falzon03

Literally none of those are possible. Gravity has zero affect on light. Light does not affect light. Dark matter is hypothetical currently.

You could potentially do it with lasers and partials in the air but there are many variables to that.

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Captn_Porky t1_j34ajm3 wrote

gravity does affect light

https://physics.stackexchange.com/questions/34352/how-is-light-affected-by-gravity#34356
https://en.wikipedia.org/wiki/Gravitational_redshift

and light does affect light

https://en.wikipedia.org/wiki/Two-photon_physics

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Falzon03 OP t1_j34c8n0 wrote

I was mistaken on gravity affecting light with it affecting the speed of light.

However, the second link on light affecting light is in a very particular circumstance in the lab.

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Captn_Porky t1_j34i0ff wrote

theres also the possibility to do something like a controlled aurora https://en.wikipedia.org/wiki/Aurora

i dont think physics keep us from making holograms,
its just all pointless to do research in this area until quantum technology has matured

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