Yes, UV light kills germs. But not all UV light is created equal. It’s a bit like saying “alcohol gets you drunk,” which is true, but you don’t drink windshield washer fluid.
The real star of the show is UVC light. It’s the bully of the light spectrum. It zaps the DNA and RNA of bacteria, viruses, and fungi, scrambling their little genetic codes. Dead germs, happy humans.
Wait, isn't sunlight UV?
Yes, the sun blasts us with UVA and UVB. Those give you a tan, a sunburn, and eventually wrinkles if you’re not careful. But the sun’s UVC? Gone. Earth’s ozone layer eats it for breakfast.
That’s why we have to make our own UVC lamps. We’re basically playing god with light rays. No big deal.