For example, a long wave has a low amount of energy or low frequency, and a short wave has a high amount of energy or high frequency. What we see in a rainbow, then, are the wavelengths of the visible colors. You see, our sun emits its radiation in this visible range, which our eyes interpret as the colors of the rainbow. Light travels in the form of a wave. White light , or the light from the sun, is made of colors , and colors are different types of light recognized by their own wavelengths.
Waves exist above and below the visible spectrum, too.
Together, the visible and invisible spectrums make up the electromagnetic spectrum . There are three things that can happen to a light wave. It can be reflected, absorbed, or transmitted . This is determined by the object that the wave hits, and that will give it its color. Solid objects, for the most part, will reflect light, and transparent objects will transmit light through them.