Fluorescent describes a type of light or color that glows brightly when exposed to certain kinds of energy, like ultraviolet light. It is often used for bright lamps and vivid, glowing colors.
“Fluorescent” comes from “fluorescence,” named after the mineral fluorite, which glows under ultraviolet light. The “-escent” ending suggests “becoming” or “showing” a certain quality.
Fluorescent materials don’t just reflect light; they absorb invisible energy and re-emit it as visible glow. That’s why highlighter pens and safety vests can look almost unreal under some lighting.
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