The purple lights aren't particularly good at ... LEDs were meant to cast a white light. However LED diodes don’t produce white light naturally. To get white light, it was necessary to mix ...

According to Scientific American, the purple hue isn’t exactly intentional ... blue wavelengths and ultimately produces a bright white light. The thickness of that layer determines the warmth ...

In fact, violet (along with the rest of the colors in a naturally occurring rainbow) has something purple doesn’t—its own wavelength of light. Anyone who ever ended up with a sunburn knows ...