Mourning doves have a small batch of iridescent feathers. The color is produced by a 260-nm-thick layer of keratin (n = 1.56), with air on both sides that are found around the edge of the feather barbules. A mutant species of the mourning dove discussed above has the side of the keratin layer facing away from the incident light bound to a thin hard layer of material of index of refraction similar to that of diamond (n = 2.42). Both keratin and diamondlike material have thicknesses of 260nm. For what visible wavelength (or wavelengths) would this structure produce constructive interference? A) 1622nm, 811nm, 406nm B) 686nm, 541nm, 412nm C) 406nm D) 541nm E) 686nm, 412nm
Mourning doves have a small batch of iridescent feathers. The color is produced by a 260-nm-thick layer of keratin (n = 1.56), with air on both sides that are found around the edge of the feather barbules. A mutant species of the mourning dove discussed above has the side of the keratin layer facing away from the incident light bound to a thin hard layer of material of index of refraction similar to that of diamond (n = 2.42). Both keratin and diamondlike material have thicknesses of 260nm. For what visible wavelength (or wavelengths) would this structure produce constructive interference? A) 1622nm, 811nm, 406nm B) 686nm, 541nm, 412nm C) 406nm D) 541nm E) 686nm, 412nm
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Mourning doves have a small batch of iridescent feathers. The color is
produced by a 260-nm-thick layer of keratin (n = 1.56), with air on both sides that are found around the edge of the feather barbules.
A mutant species of the mourning dove discussed above has the side of
the keratin layer facing away from the incident light bound to a thin hard layer of material of index of refraction similar to that of diamond (n = 2.42). Both keratin and diamondlike material have thicknesses of 260nm.
For what visible wavelength (or wavelengths) would this structure produce constructive interference?
A) 1622nm, 811nm, 406nm
B) 686nm, 541nm, 412nm
C) 406nm
D) 541nm
E) 686nm, 412nm
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