Littrow prism

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littrow spectrograph — ˈli.ˌtrō noun Usage: usually capitalized L Etymology: after Joseph Johann von Littrow died 1840 Austrian astronomer and mathematician : a spectrograph in which dispersion is produced by a prism backed by a reflecting metallic film so that the… … Useful english dictionary
Multiple-prism grating laser oscillator — Multiple prism grating laser oscillators,[1] or MPG laser oscillators, use multiple prism beam expansion to illuminate a diffraction grating mounted either in Littrow configuration or grazing incidence configuration. Originally, these narrow… … Wikipedia
Kodaikanal Solar Observatory — Kodaikanal Solar ObservatoryOrganizationIndian Institute of AstrophysicsLocationKodaikanal, IndiaCoordinatescoord|10|13|50|N|77|28|7|E|Altitude 2,343 meters (7,687 ft) Webpage [http://www.iiap.res.in/centres kodai.htm Kodaikanal Observatory]… … Wikipedia
Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale … Wikipedia
SPECTROSCOPIE - Spectrographes et spectromètres optiques — Les spectrographes et les spectromètres optiques sont des instruments permettant d’analyser la répartition spectrale de l’énergie dans une onde électromagnétique. Dans ce contexte sont considérés comme optiques des rayonnements dont la longueur… … Encyclopédie Universelle

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