6-x power magnifying
41Nikola Tesla in popular culture — Nikola Tesla, inventor and engineer, has appeared in popular culture as a character in books, films, comics and video games. The lack of recognition received by Tesla during his own lifetime has made him a tragic and inspirational character well… …
42Ruska , Ernst August Friedrich — (1906–1988) German physicist Born in Heidelberg, Germany, Ruska was educated at the Munich Technical University and at Berlin University, where he obtained his PhD in 1934. He worked in industry until 1955 when he became professor of electron… …
43diopter — dioptral, adj. /duy op teuhr/, n. 1. Optics. a unit of measure of the refractive power of a lens, having the dimension of the reciprocal of length and a unit equal to the reciprocal of one meter. Abbr.: D 2. an instrument, invented by Hipparchus …
44Glasses — Glasses, also called eyeglasses or spectacles, are frames bearing lenses worn in front of the eyes, normally for vision correction, eye protection, or for protection from UV rays.Modern glasses are typically supported by pads on the bridge of the …
45Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
46Dynameter — Dy*nam e*ter, n. [Gr. ? power + meter: cf. F. dynam[ e]tre. Cf. {Dynamometer}.] 1. A dynamometer. [1913 Webster] 2. (Opt.) An instrument for determining the magnifying power of telescopes, consisting usually of a doubleimage micrometer applied to …
47Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …
48Спутники Венеры — Так, по мнению художника, выглядела бы Венера, если бы у неё имелся спутник. Спутники Венеры  гипотетические небесные тела естественного происхождения, обращаю …
49Bates method — Alternative medicine / fringe therapies William Bates and his assistant. Claims The need for eyeglasses can be reversed by relaxation. Related fields Ophthalmo …
50Objects from The Lost Room — The Objects from The Lost Room are supernatural artifacts from the Sci Fi Channel mini series The Lost Room. The set consists of roughly one hundred everyday items one would expect to find in an occupied motel room in the 1960s. They are… …
