Definition

A process where a substance absorbs light or other radiation and then emits it as visible light, but only while the original radiation is present.

Example

The fluorescent lights in the room create a bright and vibrant atmosphere.

Conversation

Have you ever seen anything glow with fluorescence?

Yeah, I saw a cool exhibit at the science museum last month!

That sounds interesting! What did they showcase about fluorescence?

They had some minerals that glowed under UV light; it was amazing!

Synonyms & Antonyms

Root Explanation

Fluorescence → It is formed from "fluere" (meaning to flow) and the suffix "-escence" (meaning the process of becoming). The word describes the process of light being emitted by a substance that has absorbed light or other electromagnetic radiation, akin to a flow of light.

Memory Tip

Think of a substance that 'flows' ('fluere') with light as it 'becomes' luminous — that's what fluorescence means.

Visually Confused Words