Rainbows are often seen as symbols of luck, and if you spot one, consider yourself lucky. That’s because a few things need to align, both in terms of weather and physics: a little rain, some sunshine, ...

How many colors are in the rainbow? Seven said Sir Isaac Newton. Of course, Newton knew that a spectrum is just that, a continuous gradation from one color to another.

Studio B in Boyertown announced the opening of an invitational exhibit entitled “Roy G Biv” featuring artists inspired by the colors of the rainbow. The show opens Friday, Sept. 13, with a ...