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Prism (optics) 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 and rectangular sides.
Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...
Beveled glass has also been used with clear and colored textured glass to create designs. Textured glass is typically inch (3 mm) thick and has a distinct visible texture. Beveled glass is typical made from inch (6 mm) float plate glass but thicknesses up to inch (10 mm) have been used for larger windows. The width of the bevel also can vary ...
The plains-wanderer is a quail -like ground bird, measuring 15 to 19 centimetres (5.9 to 7.5 in). The adult male is light brown above, with fawn-white underparts with black crescents. The adult female is substantially larger than the male, and has a distinctive white-spotted black collar.
A laser system on an optical table. An optical table is a vibration control platform that is used to support systems used for laser - and optics -related experiments in science, engineering and manufacturing. The surfaces of these tables are designed to be very rigid with minimum deflection so that the alignment of optical elements remains ...
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