When the blue light from the diodes goes through this layer, the phosphor absorbs some of the blue wavelengths and spits out red and yellow ones. This results in a mixture of colors that, once ...

A streetlight glows an eerie purple-blue at Commodore Street and Elder Avenue in Charlotte's Oakhurst neighborhood. A few months ago, Tara Benson noticed something weird about the streetlights on ...

The reason we say violet is because Isaac Newton said violet, but when Isaac Newton said violet he really meant blue. Yet as Reich points out, rainbows in the sky sometimes do seem to have purple ...