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Laundry detergent fluorescing under ultraviolet light. Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the ...
4,4′-Diamino-2,2′-stilbenedisulfonic acid is the organic compound with the formula (H 2 NC 6 H 3 SO 3 H) 2 C 2 H 2.It is a white, water-soluble solid. Structurally, it is a derivative of trans-stilbene, containing amino and sulfonic acid functional groups on each of the two phenyl rings.
Target Optical was founded by the Cole National Corporation in 1995 [1] in Cleveland, Ohio. In 2004, the Cole National Corporation was acquired by the Italian Luxottica S.p.A. along with other Cole National Corporation holdings such as Pearle Vision. Luxottica folded Cole's operations into its North American Retail Group and the Cole structure ...
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The Journal of the Optical Society of America is a peer-reviewed scientific journal of optics, published by Optica. [1] It was established in 1917 [ 2 ] and in 1984 was split into two parts, A and B.
In 2014, Optical Express raised over £10,000 for the STV Appeal. In 2015, it raised over £100,000. [50] Optical Express has a long-standing relationship with global vision charity, Sightsavers. In 2014, the company and its staff helped to raise over £10,000 for the charity's Christmas Appeal.
The White–Haines Building, also known as C. O. Haines Optical Company Building, is a historic building located at 82 North High Street in Downtown Columbus, Ohio. [2] The building is part of the High and Gay Streets Historic District on the National Register of Historic Places.
Tooth whitening or tooth bleaching is the process of lightening the colour of human teeth. [1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic colour of the tooth enamel. [2]