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What is "Fluorescent Brightener" - Definition & Explanation

A substance that is added to a textile (uncoloured or coloured) to increase the apparent light reflectance in the visible region by the conversion of ultraviolet radiation into visible light and so to increase the apparent brightness or whiteness of the textile.
Fluorescent brightening agents or optical brightening agents or fluorescent whitening agents are dyes that absorb light in the ultraviolet and violet region of the electromagnetic spectrum, and re-emit light in the blue region.

Some other terms

Some more terms:

Desirable changes in wood that provide interesting patterns at the surface. Examples are: flame, crotch (curl, Brit.), burl (burr, Brit.) , curly (tiger stripe, fiddle, fiddleback) and birdseye....
Refers to fibers that are typically manufactuered through an electrospinning process, which spins fibers in diameters ranging from 10nm (nanometers) to several hundred nanometers, but usually less...
This bast fibre comes from the Urena lobata plant. Wild, it grows 3 to 7 feet high and when cultivated can grow as tall as 13 feet. The fiber strands are cream coloured and have a wonderful luster....
Ability of a fiber to spring back to its natural position after folding, creasing or deformation. Loft is related to resiliency; it is the ability to return to original thickness after being...
The density of a material divided by the density of water. Expressed as a number greater than 0. Materials with specific gravity less than 1.00 will float and materials with specific gravity greater...

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