submitted 3 months ago by RewindAgain@futurology.today to c/futurology@futurology.today

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[-] nickwitha_k@lemmy.sdf.org 2 points 3 months ago

Was going to say that phototransistors have existed for 70 years https://en.m.wikipedia.org/wiki/Photodiode

But... Then realized that you said optical (light as medium, not light controlling electricity).

this post was submitted on 19 Jun 2024

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