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Computer glasses may refer to: Blue-light blocking glasses, to try to reduce eyestrain from computer use; Smartglasses, glasses with computer technology
A vertical bell lyre in use by the National Marching Band of the RAF Air Cadets. In the United Kingdom, the United States, and Canada, a form of glockenspiel is called a bell lyre, bell lyra, or lyra-glockenspiel. [11] The bell lyre is a form of glockenspiel commonly used in marching bands. [12]
The American Academy of Ophthalmology (AAO) does not recommend special eyewear for computer use, [13] [14] although it recommends using prescription glasses measured specifically for computer screen distance (depending on individuals, but possibly 20–26 inches from the face), which are not the same as "blue-light blocking" glasses. [21]
Screens emit blue light that can affect sleep and strain eyes. The best blue light glasses block the blue light from reaching your eyes.
Blue light is absorbed by the structural proteins, enzymes, and protein metabolites found in the lens. [9] The absorption of blue light creates yellow pigments in the lens's protein. The lens progressively darkens and turns yellow. [9] Blue light is absorbed by the lens, preventing blue light from reaching the retina at the back of the eye. [12]
Another keyboard instrument used in the orchestra, as well as jazz, is the vibraphone. The most commonly requested excerpt for vibraphone at orchestral auditions is from Leonard Bernstein's "West Side Story." The "Little Blue Devil" movement from "Seven Studies on Themes of Paul Klee" by Gunther Schuller is also frequently requested.
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