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The standard type of anti-glare filter consists of a coating that reduces the reflection from a glass or plastic surface. [2] These are manufactured from polycarbonate or acrylic plastic . [ 1 ] An older variety of anti-glare filter used a mesh filter that had the appearance of a nylon screen.
The first screen protector was designed and patented by Herbert Schlegel in 1968 for use on television screens. [1] In 1990s, the CRT screen protectors were used on CRT monitors for anti-glare and anti-radiation purposes. [citation needed] Later, they were adapted for use on LCD monitors.
Uncoated glasses lens (top) versus lens with anti-reflective coating. The reflection from the coated lens is tinted because the coating works better at some wavelengths than others. An antireflective , antiglare or anti-reflection ( AR ) coating is a type of optical coating applied to the surface of lenses , other optical elements, and ...
A Pixel Qi screen installed in an OLPC XO laptop operating in transmissive mode. The screen is in color mode and is retro-illuminated. A transflective liquid-crystal display [1] is a liquid-crystal display (LCD) with an optical layer that reflects and transmits light (transflective is a portmanteau of transmissive and reflective). [2]
The president of the Republic of Ghana is the elected head of state and head of government of Ghana, as well as commander-in-chief of the Ghana Armed Forces. The current president of Ghana is John Mahama, who won the 2024 presidential election against then vice president, Mahamudu Bawumia, by a margin of 14.94%. He was sworn into office on 7 ...
He became Prime Minister in 1952 and retained the position when he led Ghana to achieve independence from Britain in 1957, a first in sub-saharan Africa at the time. In 1960, Ghanaians approved a new constitution and elected Nkrumah President .
Coat of arms of Ghana; Armiger: Republic of Ghana: Adopted: 4 March 1957: Crest: A black star bordered in gold: Torse: Gold, green and red: Shield: Azure on a cross vert fimbriated Or a lion passant guardant Or, in the first quarter a linguist's staff and ceremonial sword crossed in saltire Or, in the second quarter issuant from five bars wavy Argent and Azure a castle Argent upon a mount Or ...
The National Science and Maths Quiz is an annual science and mathematics content-based national level quiz competition for senior high schools in Ghana.The yearly competition is produced by Primetime Limited, an education-interest advertising and public relations agency, since 1993.