radial grating

См. также в других словарях:

• High Accuracy Radial velocity Planet Searcher — Спектрограф HARPS и 3.6m телескоп в La Silla. Слева вверху башня телескопа, справа сверху сам телескоп …   Википедия

• Wagon-wheel effect — The wagon wheel effect (alternatively, or stagecoach wheel effect, stroboscopic effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly than the true… …   Wikipedia

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

• Diffraction — Computer generated intensity pattern formed on a screen by diffraction from a square aperture …   Wikipedia

• Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …   Wikipedia

• Grater — Cheese grater redirects here. For the industrial tool, see surform. For the skyscraper in London, see 122 Leadenhall Street. For the building at Leicester University, see Attenborough Building. For the UCL magazine, see The Cheese Grater. Grater …   Wikipedia

• Optical vortex — An optical vortex (also known as a screw dislocation or phase singularity) is a zero of an optical field, a point of zero intensity. Research into the properties of vortices has thrived since a comprehensive paper by Nye and Berry, in 1974,[1]… …   Wikipedia

• nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …   Universalium

• Nanogenerator — is an energy harvesting device converting the external kinetic energy into an electrical energy based on the energy conversion by nano structured piezoelectric material. Although its definition may include any types of energy harvesting devices… …   Wikipedia

• Observational astronomy — Mayall telescope at Kitt Peak National Observatory Observational astronomy is a division of the astronomical science that is concerned with getting data, in contrast with theoretical astrophysics which is mainly concerned with finding out the… …   Wikipedia

• Über das farbige Licht der Doppelsterne und einiger anderer Gestirne des Himmels — is a treatise by Christian Doppler (1842) [Some sources mention 1843 as year of publication because in that year the article was published in the Proceedings of the Bohemian Society of Sciences. Doppler himself referred to the publication as Prag …   Wikipedia