First, let’s get our science nerd on, but keep it breezy. UV light—ultraviolet, for the fancy folks—is a type of energy that sits just beyond the violet end of the rainbow. It’s like the rebellious cousin of sunlight that can actually do some damage.
Think of it this way: regular light is a friendly wave from across the street. UV light is that same wave, but it’s carrying a flamethrower. And that flamethrower is incredibly good at turning germs into microscopic toast.
There are three types: UVA, UVB, and UVC. UVA gives you a tan (cue the “I look like a lobster” stories). UVB gives you a sunburn. But UVC? That’s the germ-killing ninja we’re here to talk about.