Day and night are caused by ОА.
the rotation of Earth on its axis.
ОВ.
the rotation of the Sun on its axis.
OC.
the Sun completing a full orbit around the Earth.
OD
the Earth completing a full orbit around the Sun.

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th