this post was submitted on 14 Dec 2025
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Didn't they think in those days that your eyes sent beams out to touch whatever they were looking at?
I wonder if he thought his eyes were sending beams out into space.
I don't see how that's relevant here.
If his eyes were sending out rays, they did go out into space.
But that's not actually how it works. Although it is how it works in video games (raytracing).
I think it is just a fun way of thinking about it.
In reality, things from space were travelling to earth to interact with Galileo's retina.