In your own words, describe why the non-visible part of the Electromagnetic Spectrum is non-visible to humans. (And if you happen to know of animals that are able to see parts of this section of the spectrum, please include that wisdom!)

Question

mrnood · Answer

the fluid in the eyeball is known as the aqueous humour.

aqueous means water based.

look at the absorption spectrum for water - and see which wavelengths could pass through the fluid.....