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Phosphorescence is a phenomenon that allows a material to continue to glow for a considerable amount of time. Contrary to electroluminescence, no electricity supply is used as it draws its energy from the previously absorbed radiation. Modern materials with phosphorescent attributes exhibit a lengthy afterglow.

Typical uses for phosphorescence are signs in the field of photoluminescent safety systems (e.g. fire extinguisher symbols and emergency exit signs).

In the consumer sector, sophisticated and highly effective designs can be created with phosphorescence technology.
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