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Males are more likely to inherit red–green color blindness than females, because the genes for the relevant opsins are on the X chromosome. [1] Screening for congenital red–green color blindness is typically performed with the Ishihara or similar color vision test. [1] It is a lifelong condition, and has no known cure or treatment. [1]
The Ishihara test is a color vision test for detection of red–green color deficiencies. It was named after its designer, Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917. [2] The test consists of a number of Ishihara plates, which are a type of pseudoisochromatic plate.
EnChroma are a brand of color corrective lenses designed to address the symptoms of red–green color blindness.Studies have shown that these lenses can alter the appearance of colors, but they do not restore normal color vision, [1] and generally agree that they do not allow the wearer to see "new" colors. [2]
Achromatopsia, also known as rod monochromacy, is a medical syndrome that exhibits symptoms relating to five conditions, most notably monochromacy.Historically, the name referred to monochromacy in general, but now typically refers only to an autosomal recessive congenital color vision condition.
A Porta-Color television receiver in use. General Electric's Porta-Color was the first "portable" color television introduced in the United States in 1966. The Porta-Color set introduced a new variation of the shadow mask display tube. It had the electron guns arranged in an in-line configuration, rather than RCA's delta arrangement. The main ...
The knowledge argument (also known as Mary's Room, Mary the Colour Scientist, or Mary the super-scientist) is a philosophical thought experiment proposed by Frank Jackson in his article "Epiphenomenal Qualia" (1982), [1] and extended in "What Mary Didn't Know" (1986).
Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]
A variant of the C30-7, 50 GE C30-7As were purchased by Conrail in mid-1984. Externally similar to the GE C30-7 model, six tall hood doors per side (in place of eight) showed it had a 12-cylinder (rather than 16-cylinder) prime mover. Both engines produced 3,000 horsepower (2,200 kW) but the C30-7A's smaller engine used less fuel.