Refraction Problem #3 Goal: Find the exit angle relative to the horizontal.

36°

glass

The triangle is isosceles.
Incident ray is horizontal,
parallel to the base.​

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3