Learn about the colours of the rainbow.
How to Remember a Rainbow's Colors in Order - Owlcation
Sheets of carbon nanotubes come in a rainbow of colors - Advanced
Using better colours in science - The Centre for Earth Evolution
The Science Behind Fully Double Rainbows
Rainbows - Part I - Introduction and The Science Of The Rainbow
What are the colours of the rainbow? - Met Office
How Many Colors Are There In A Rainbow? Why Don't You See All Colors?
The Colors of the Rainbow for Designers
Gorgeous Rainbow Science and Activities