luminescent etymology

Etymology:

• Derived from Latin "lumen" (light) + "-escent" (becoming)

Meaning:

• Emitting or reflecting light without heat or combustion
• Glowing or shining

Origin:

The word "luminescent" was first used in the early 1800s to describe substances that emit light without heat. The term was coined by scientists who were studying the phenomenon of phosphorescence, in which materials continue to emit light after being exposed to an external light source.

Since then, the term "luminescent" has been expanded to include a wide range of materials that emit light without heat, including:

• Fluorescent materials: Emit light of a different wavelength than the exciting light source
• Phosphorescent materials: Emit light that persists after the exciting light source is removed
• Bioluminescent materials: Emit light from living organisms, such as fireflies and jellyfish
• Electroluminescent materials: Emit light when an electric current is passed through them

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