A thin film with a refractive index of 1.32 is surrounded by air. What is the minimum thickness of this film that minimizes the reflection of normally incident light of wavelength 500 nm?
After a minor oil spill, a thin film of oil, with a thickness of 450 nm, floats on the surface of the water in a bay. Use a value of 1.40 for the refractive index of the oil, and a value of 1.33 for the refractive index of the water. What is the predominant wavelength seen by someone flying in a helicopter overhead?
A transparent film of thickness 250 nm and index of refraction of 1.40 is surrounded by air. A beam of white light that is incident almost normal to the film undergoes destructive interference when reflected. What wavelength in the beam undergoes destructive interference at reflection from the film?