this post was submitted on 29 Jan 2024
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chapotraphouse

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[–] [email protected] 53 points 1 year ago* (last edited 1 year ago) (18 children)

You see the light reflecting from paint doesn't actually become blue, it loses yellow nerd

so if i put spectrophotometer, it won't show spike at 460 nm?

well, yes, it would nerd

fucking nerds

[–] [email protected] 13 points 1 year ago (1 children)

a UV-vis spectrum of the pigment in their feathers should look like this and the observed light is from scattering instead of absorption processes. god fuck please wedgie me

[–] [email protected] 11 points 1 year ago* (last edited 1 year ago) (1 children)
[–] [email protected] 14 points 1 year ago (1 children)

pedantic shit but since im shrivelling into a corn cob: reflectance spectroscopy on a bulk structure that reflects blue shows that it indeed reflects blue, not that the material comprising the structure itself transmits blue as with pigments

[–] [email protected] 13 points 1 year ago (2 children)

rage-cry <- this is me rn.

Pigments (typically used in non transparent dyes) don't transmit, they subtract parts of white light, and reflect what we call their color. Indigo does exact same shit - indeed reflect blue(tm).

its not "an optical illusion"

[–] [email protected] 11 points 1 year ago (1 children)

shit fair shout had internal transmittance and absorption mixed up. and yeah it's not an optical illusion, it's still reflecting blue light, just not as a direct result of electronic effects

[–] [email protected] 11 points 1 year ago (2 children)

We can be two corncobs together in the field meow-hug

[–] [email protected] 11 points 1 year ago

ok but im still dying mad

[–] [email protected] 2 points 1 year ago

Shut up and kiss already, nerds!

[–] [email protected] 7 points 1 year ago (1 children)

"transmission" is analogous to transparency, right?

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