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 ...

As a result, purple and magenta are known as "nonspectral" colors, because they don't really exist as actual electromagnetic radiation. Nonspectral colors like purple are made of two wavelengths of ...

Red, blue, yellow and white stars twinkle overhead. So why no green ... Since a star emitting purple light also sends out blue light — the two colors are next to one another on the visible light ...

It's not the only color for a cause. Purple probably won't be the only porch light color you'll see. People use red porch lights to highlight women's heart health. And blue porch lights, like blue ...