A couple of questions about rainbows....?

[Southpaw]

A rainbow is formed when sunlight is refracted and reflected from raindrops. Since sunlight (white light) is composed of 7 different colors of different wavelengths, when the sunlight is refracted by the raindrop, the light bends but since each light has a different wavelength, each light bends by a different amount. As a result the 7 colors are seperated and we see a rainbow.

Primary rainbows involve the sunlight undergoing two refractions and one reflection while Double rainbows (Secondary Rainbows) involve the sunlight undergoing two refractions and two reflections. Because the light undergoes one more reflection than in a normal rainbow, the colors appear inverted. Also a Double rainbow is fainter than a primary rainbow because during each reflection, some light is lost each time it hits the edge of the drop.