Childrens' rainbow pictures have become a familiar sight in windows across the UK and have become a symbol of hope during the coronavirus crisis. Rainbows have symbolised many things over the ...

When I learned about colors in grade school everything started with red, yellow, and blue and getting fancier colors was easy. I mixed some blue into my yellow to get green, or into red to get ...

The rainbow is a division of white light into many beautiful colors. These take the shape of a long round arch, with its path high above, and its two ends apparently beyond the horizon. There is, ...