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Optical correction using glasses or contact lenses is the most common treatment; other approaches include orthokeratology, and refractive surgery. [ 68 ] : 21–26 Medications (mostly atropine ) and vision therapy can be effective in addressing the various forms of pseudomyopia .
During this period he investigated the refraction of light, demonstrating that the multicoloured image produced by a prism, which he named a spectrum, could be recomposed into white light by a lens and a second prism. [63] Modern scholarship has revealed that Newton's analysis and resynthesis of white light owes a debt to corpuscular alchemy. [64]
The Photomic series of prisms, which was initially designed with a direct coupled-metering CdS photocell (2 models were produced). The Photomic prism head later evolved to include the Photomic T with TTL in 1965, a behind-the-lens metering prism head which metered an averaging pattern of the focusing screen.
The 10 best cult-favorite cleaning items . Show comments. Advertisement. Search Recipes. Sautéed Chicken Breasts in Tomato Herb Sauce. Baked Ziti Supreme. Herb & Sausage Stuffing with Tangy ...
Harold Hopkins (1918–1994), UK – zoom lens, rod lens endoscope Grace Murray Hopper (1906–1992), U.S. – compiler Frank Hornby (1863–1936), UK – invented Meccano
Budget. $18.5 million. Box office. $131.1–183.3 million. Aliens is a 1986 science fiction action film written and directed by James Cameron. It is the sequel to the 1979 science fiction horror film Alien, and the second film in the Alien franchise. Set in the far future, it stars Sigourney Weaver as Ellen Ripley, the sole survivor of an alien ...
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