You know sunlight has UV rays, the ones that give you a sunburn. Well, UV light comes in a few flavors: UVA and UVB (the ones that hit your skin) and UVC, which is the germ-killing superhero. The atmosphere actually blocks most natural UVC, so our little home lamps are basically manufacturing that invisible power.
Think of it like this: UVA and UVB are the slow, burning heat of a campfire. UVC is more like a laser beam—short, intense, and specifically tuned to wreck something tiny.
