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Black Light Pigments
This short film from the Technology Enhancement Programme (TEP) is one of a series of clips which were produced to demonstrate the properties and use of a range of smart materials.
Black light pigments are microencapsulated materials that are specifically formulated to absorb UV radiation at the near-invisible end of the spectrum (hence ‘black light’) and re-emit the absorbed energy as visible light of various colours. The pigments appear almost white in daylight/sunlight but in black light they glow in bright colour. The pigments have a number of applications including security marking of banknotes.
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