How is a rainbow made?

Question

How is a rainbow made?

Answer 1

light passes through humidity in the air much like a prism separating the colors into the spectrum we all know.  

Answer 2

Rainbows are optical illusions and meteorological phenomena that cause a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere.

The light is first refracted as it enters the surface of the raindrop, reflected off the back of the drop, and again refracted as it leaves the drop. The overall effect is that the incoming light is reflected back over a wide range of angles, with the most intense light at an angle of 40°–42°. The angle is independent of the size of the drop, but does depend on its refractive index. Seawater has a higher refractive index than rain water, so the radius of a 'rainbow' in sea spray is smaller than a true rainbow. This is visible to the naked eye by a misalignment of these bows

Answer 3

Lots of Skittles™

Answer 4

raindrops in the are refract the light

Answer 5

Light refracts throught the prisms of frozen ice particles high in the sky and a light spectrum results.