Why does it make everything glow without making the room brighter??
In: Physics
Black lights emit UV light, light that is higher energy, but cannot be seen by the human eye.
BUT, when black light hits something (like white clothing) some of the light energy can get absorbed by that material, but then the rest is reflected as less energetic visible light.
Basically, black lights emit light too energetic to be seen. When it hits some objects, some energy is absorbed, while the rest of the light is reflected, reflecting now visible light back at our eyes that we can see
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