this post was submitted on 11 Apr 2025
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Science Memes

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[–] OfCourseNot@fedia.io 2 points 4 days ago (1 children)

What if the refractive index of elvish eyes were somehow absurdly high? Paired with a very high resolution and sensitivity retina of course.

[–] Umbrias@beehaw.org 3 points 4 days ago (2 children)

the diffraction limit of a lens cant really be circumvented optically, it's a fundamental limit of light due to being waves. so some insane refractive index wont help.

[–] Swedneck@discuss.tchncs.de 1 points 1 day ago (1 children)

but elves are magical, so what if their eyes don't care about the physical nature of light and just sorta convert it to magical pseudo-light when it contacts their tissue?

[–] Umbrias@beehaw.org 0 points 1 day ago

that's not really relevant to the question at hand. "but magic" is clearly not an interesting answer when people are playing around with physics.

[–] OfCourseNot@fedia.io 2 points 4 days ago (1 children)

Aye but light, being a wave, doesn't travel at the same speed in every medium. In a high refractive index media the wavelengths of visible light would be shorter. Would this not reduce the effect of diffraction on them for normal-sized pupils?

[–] Umbrias@beehaw.org 1 points 4 days ago

The light diffracts before it reaches the lens so this wont help. Also, refraction doesnt change the wavelength of light, it just takes time to bounce and re-emit through the medium.