Some types of optical prism are not in fact in the shape of geometric prisms.
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It is the most widely-known type of optical prism, although perhaps not the most common in actual use.
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In optics, a dispersive prism is a type of optical prism, usually having the shape of a geometrical triangular prism.
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In optics, a dispersive prism is a type of optical prism, normally having the shape of a geometrical triangular prism.
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Using the optical or prism sight, such compasses can be read with extreme accuracy when taking bearings to an object, often to fractions of a degree.
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In optics, a prism is a transparent optical element with flat, polished surfaces that refractlight.
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A high refractive index contact liquid is used to achieve optical contact between the gem and the prism.
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William Huggins was one of the earliest astronomers to study the optical spectra of astronomical objects, using a prism to disperse their light.
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In such a measurement, the prism is placed on the central rotary platform of an optical spectrometer with the incident light beam adjusted such that the refracted beam is at minimum deviation.