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Blue-light blocking glasses, to try to reduce eyestrain from computer use; Smartglasses, glasses with computer technology Google Glass, major brand; See also.
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Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
Blue light phototherapy, light therapy involving a medical device that radiates blue light; Cobalt blue light, a type of light used by slit lamps to help in the diagnosis of eye diseases; Effects of blue light technology; Blue Lanterns (disambiguation) Bluelight (disambiguation)
Amazon Kindle is a series of e-readers designed and marketed by Amazon. Amazon Kindle devices enable users to browse, buy, download, and read e-books , newspapers, magazines, Audible audiobooks, and other digital media via wireless networking to the Kindle Store . [ 3 ]
A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals.
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