These are great for understanding how lighting works. If you look through the foil and a little to the side at a lightbulb, you'll see a stretched version of the light that looks like a rainbow. Colors (reds, greens, and blues) that indicate that the light comes from the phosphors that emit those colors. While these lights claim to be "full spectrum," the actual spectrum is a discrete sampling of frequencies that combine to allow us to see as if the full spectrum were present. Variousβ¦