14 points
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
12 points
*
yeah, but instead feathers look like this, also known as “really blue”
15 points
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
15 points
<- 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™.
its not “an optical illusion”
