Here's why:
* Fluorescence is a process where a substance absorbs light at one wavelength and then emits light at a longer wavelength.
* UV radiation has a shorter wavelength than visible light, and its energy can excite electrons in certain molecules.
* When these excited electrons return to their ground state, they release energy in the form of visible light, causing the substance to glow.
Examples:
* Fluorescent lights use UV radiation to excite a phosphor coating, which then emits visible light.
* Black lights are UV lamps that are used to make fluorescent materials glow.
* Certain minerals fluoresce when exposed to UV light, which is used in geology to identify them.
Let me know if you have any other questions!
