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https://gcn.com/articles/2020/12/11/...opter.aspx?m=1

‘Smellicopter’ uses a live moth antenna to hunt for scents

Riddle me this

It’s a fact that if a near sighted person looks at objects in a mirror objects that are farther away they will become blurry same as if they were just looking out at a landscape

I read that it’s because the light still has to travel farther to get to the mirror if the object is farther away but that doesn’t make sense to me because the light from the mirror only has to travel from the surface of the mirror to your eyes

Another explanation is because it’s because your brain is trained to blur things out from a distance if you’re near sighted. Well if that’s true then why doesn’t your brain blur out far away objects in a photograph?

Riddle me that, smarties

Quote:

Originally Posted by OccultHawk (Post 2149617)

The distance argument is right. Near sightedness means things get blurry because your eye focuses too strongly, so approximately parallel light rays from for away objects don't end up focused on your retina. So it depends on how much the light rays diverge/converge.
The picture below shows that the rays are reflected by the mirror, but not refocused. Effectively, if you consider how much they diverge, they come from the original source; you can even get the same result by setting an imaginary source point behind the mirror.
https://i.imgur.com/PeC94nj.jpg

Quote:

So it depends on how much the light rays diverge/converge

Ah yeah. My problem was I was focused on the distance instead of the behavior of light. That also explains why at the DMV they can test your vision with a machine that isn’t fifty meters long. The machine only has to recreate how much the light rays diverge/converge.

I think the reason that’s a bit of a mind **** for me is because even though I know on paper that the light obviously has to travel to my eyes it seems like my eyes are reaching out to the object that’s reflecting the light.

You did a great job of explaining that. Thank you.

No problem, the prissy schoolteacher in me enjoys these things. Mirrors are freaky objects for sure

Quote:

Originally Posted by Marie Monday (Post 2149681)

No problem, the prissy schoolteacher in me enjoys these things. Mirrors are freaky objects for sure

So are eyes.

New form of solar energy to enter US market

Quote:

Conceptually, it's a whole new thought process on how we make power.

Well, dang.

Encryption Lava Lamps

Quote:

As the lava lamps bubble and swirl, a video camera on the ceiling monitors their unpredictable changes and connects the footage to a computer, which converts the randomness into a virtually unhackable code.