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Corrective lenses. A corrective lens is a lens worn on or before the eye. They are used to treat myopia, hypermetropia, astigmatism, and presbyopia .
Riding a rail, sketched by Andrew W. Warren in November 1864. The first variation of the wooden horse is a triangular device with one end of the triangle pointing upward, mounted on a sawhorse -like support. The victim is made to straddle the triangular "horse." Weights or additional restraints were often added to keep the victim from falling off.
A prism compressor is an optical device used to shorten the duration of a positively chirped ultrashort laser pulse by giving different wavelength components a different time delay. It typically consists of two prisms and a mirror. Figure 1 shows the construction of such a compressor. Although the dispersion of the prism material causes ...
Device file, an interface of a peripheral device driver. Electronic component, a device that can be embedded in the construction of electronic hardware. Gadget, generally synonymous with device; often used when a more specific word is not well-known or cannot be recalled. Handheld device, a small computer such as a phone or tablet.
Prism spectrometer. A prism spectrometer is an optical spectrometer which uses a dispersive prism as its dispersive element. The prism refracts light into its different colors ( wavelengths ). The dispersion occurs because the angle of refraction is dependent on the refractive index of the prism's material, which in turn is slightly dependent ...
Born. 1768. Nationality. Scottish. Known for. invented the Nicol prism, the first device for obtaining plane polarized light. Nicol's house, 12 Inverleith Terrace, Edinburgh. Memorial to William Nicol, Warriston Cemetery. William Nicol FRSE FCS (1768? – 2 September 1851) was a Scottish geologist and physicist who invented the Nicol prism, the ...
One common application of dichroic prisms is in some camcorders and high-quality digital cameras. A trichroic prism assembly is a combination of two dichroic prisms which are used to split an image into red, green, and blue components, which can be separately detected on three CCD arrays. A possible layout for the device is shown in the diagram.
Prism lighting is the use of prisms to improve the distribution of light in a space. It is usually used to distribute daylight , and is a form of anidolic lighting . Prism lighting was popular from its introduction in the 1890s through to the 1930s, when cheap electric lights became commonplace and prism lighting became unfashionable.
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