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Yoked prism can move the image away from primary gaze without the need for a constant head tilt or turn. [1] Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex.
Prism (optics) A familiar dispersive prism. An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base ...
Compulsory figures were an important part of figure skating for the rest of the 19th century until the 1930s and 1940s. The first European Championships in 1891 consisted of only compulsory figures. [ 23 ] In 1896, the newly formed International Skating Union (ISU) sponsored the first annual World Figure Skating Championships in St. Petersburg.
History of optics. Modern ophthalmic lens making machine. Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek philosophers, and the development of geometrical optics in the Greco-Roman world. The word optics is derived from the Greek term ...
A quadruple jump or quad is a figure skating jump with at least four (but fewer than five) revolutions. [1] All quadruple jumps have four revolutions, except for the quadruple Axel, which has four and a half revolutions. The quadruple toe loop and quadruple Salchow are the two most commonly performed quads.
The World Figure Sport Society (WFSS) is a not-for-profit organization dedicated to the revival of Figures and Fancy Skating and not just compulsory figures (or school figures), which were formerly a segment of figure skating and gave the sport its name. [1][2] Figures are the "circular patterns which skaters trace on the ice to demonstrate ...
Figure skating is a sport in which individuals, pairs, or groups perform on figure skates on ice. It was the first winter sport to be included in the Olympic Games, with its introduction occurring at the 1908 Olympics in London. [1] The Olympic disciplines are men's singles, women's singles, [note 1] pair skating, and ice dance; the four ...
The Canadian Figure Skating Association invited the pair to compete at Skate Canada, where they placed second in the short program – ahead of reigning Canadian Champions Kristy Sargeant and Kris Wirtz – and third in the long program to win the bronze medal. Because of their success, they were invited to the NHK Trophy in Japan and won ...
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