Optical flat
An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres (billionths of a meter). They are used with a monochromatic light to determine the flatness (surface accuracy) of other surfaces, whether optical, metallic, ceramic, or otherwise, by interference. When an optical flat is placed on another surface and illuminated, the light waves reflect off both the bottom surface of the flat and the surface it is resting on. This causes a phenomenon similar to thin-film interference. The reflected waves interfere, creating a pattern of interference fringes visible as light and dark bands. The spacing between the fringes is smaller where the gap is changing more rapidly, indicating a departure from flatne
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Absolute scaleCalypso (camera)Fabry–Pérot interferometerFizeau interferometerFlatGauge blockHall_XPTBHIndex of physics articles (O)InterferometryLappingMirrorNewton's ringsNicholas MayallOptical flatsOptical windowOptically flatOutput couplerRaman spectroscopyStanding waveThin-film interferenceWedge prism
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Optical flat
An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres (billionths of a meter). They are used with a monochromatic light to determine the flatness (surface accuracy) of other surfaces, whether optical, metallic, ceramic, or otherwise, by interference. When an optical flat is placed on another surface and illuminated, the light waves reflect off both the bottom surface of the flat and the surface it is resting on. This causes a phenomenon similar to thin-film interference. The reflected waves interfere, creating a pattern of interference fringes visible as light and dark bands. The spacing between the fringes is smaller where the gap is changing more rapidly, indicating a departure from flatne
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An optical flat is an optical- ...... in spectrophotometry as well.
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Das Planglas (bzw. Plan-Probeg ...... d Parallelität geprüft werden.
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An optical flat is an optical- ...... cating a departure from flatne
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Das Planglas (bzw. Plan-Probeg ...... DIN 58161 Teil 1 bzw. Teil 2.
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Optical flat
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Planglas
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