Check out this series of photographs.
One girl spinning a rainbow umbrella creates an unusual effect with color.
As she spins the umbrella faster, the colors begin to blur.
The faster she spins, the more the umbrella begins to look like it's all one color.
This is one of those internet photo sets that has gone viral.
Unfortunately, I'm unable to find the name of the people who are responsible for bringing us this kind of coolness.