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Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [ 2]
Last updated: April 2, 2024. Website. lindseystirling .com. Signature. Notes. [ 2] Lindsey Stirling (born September 21, 1986) is an American violinist, songwriter and dancer. [ 3][ 4][ 5] She presents choreographed violin performances, in live and music videos found on her official YouTube channel, which she created in 2007.
Deluxe Reading dolls were sold in the 1950s–1970s through supermarkets and are often referred to as Grocery Store Dolls. They were an inexpensive alternative to department store dolls, although of similar quality. Another successful toy for girls was the "Dream Kitchen" (circa 1961) which consisted of four 12-inch-tall colorful kitchen ...
The prism cover test ( PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]
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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 ...
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