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by throwaway_tech 2356 days ago
> It didn't say there was no way to channel the information about the surroundings into any photosensitive device.

No it specifically said

>"This is why you can’t see things in dark; no light means...".

Not sure how to make the distinction any simpler, maybe you can follow:

If there is no light, then it is dark (true) - thats what you claim is being said, but thats not what is said, what is said is

If it is dark, then there is no light (false) - any time you have been in the dark, there has always been light.

>Probably much like looking at a solid object embedded in colored but not opaque glass. The ability to see things inside other visible things is not foreign to the visible light spectrum.

Sure the non-imaginative approach is to say just superimpose 3 images on top of one another with each image having some transparency. And sure that may make sense for objects like bone inside the persons outer skin...but emitted heat is not a solid object inside another solid object, it neither embedded in the object (its emitted) nor solid.

1 comments

This is pedantry.

'light' means either electromagnetic radiation or visible light, depending on context.

In this context, it means visible light. I'm not sure what you get out of pretending otherwise.

>In this context, it means visible light.

When did "I pretend otherwise"? My comment(s) have nothing to do with the meaning of light. I'm not sure what you get out of pretending otherwise.

Either way in the dark when you can't see, the author is wrong, that doesn't mean there is no light...there is light, at minimum the person who can't see is emitting it. Many people don't know that and find it interesting.

Its not pedantry its fundamental laws of physics.

You're doing it again.

Humans do not radiate visible light.

Also colloquially referred to as light.

Now I see the problem and confusion on your end...you don't think humans emit visible light.

Like I said, most people don't know and are fascinated, that is why I shared it...I don't find many who dispute it, but here are some articles about the studies that confirmed it:

https://www.sciencealert.com/you-can-t-see-it-but-humans-act...

https://www.nationalgeographic.com/science/phenomena/2009/07...

https://journals.plos.org/plosone/article?id=10.1371/journal...