This is the picture I created using a flashlight and cup of water. I think that it is really cool that rainbows occur naturally, but they can also be created artificially. To do this I pointed the flashlight at an angle towards the water to get it to reflect a rainbow on the table. This worked because the reflection of light in water results in a spectrum of light appearing. It shows up in colors because the light is first refracted going through the surface of the water, reflected off the back, and then refracted again as it leaves the water. The amount of light that is refracted depends on its wavelength, which gives it its color. Certain colors have shorter wavelengths than others so this is why we can differentiate the colors from one another.
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