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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:

A toothed, comb-like part of a LOOM. Its function is to hold the strands of longitudinal yarn (WARP) in alignment between its teeth and also to push each transverse thread (PICK) tight against the...
A ballgown is a type of long dress that is fitted at the bodice, with a very full skirt. This is the most formal dress silhouette, usually reserved for the dressiest of occasions. The ballgown looks...
Fabric is mounted flat and rubbed in a figure eight-like motion using a piece of worsted wool cloth as the abradant. The number of cycles endured before the fabric shows an objectionable change in...
Artificial aging by wear and tear to leather or wood. In wood this can be physical distressing such as dents, gouges, worm holes, and scratches, or finish distressing such as wearing away, crackle,...
A manufactured fiber in which the fiber-forming substance is a long chain of synthetic polyamide in which at least 85% of the amide linkages are attached directly to two aromatic rings. Aramid...

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