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photometric constant

См. также в других словарях:

  • photometry — photometric /foh teuh me trik/, photometrical, adj. photometrist, photometrician /foh teuh me trish euhn/, n. /foh tom i tree/, n. 1. the measurement of the intensity of light or of relative illuminating power. 2. the science dealing with such… …   Universalium

  • Redshift — This article is about the astronomical phenomenon. For other uses, see Redshift (disambiguation). Physical cosmology …   Wikipedia

  • The Dark Energy Survey — DES logo The Dark Energy Survey (DES) is a survey that aims to probe the dynamics of the expansion of the universe and the growth of large scale structure. The collaboration is composed of research institutes and universities from United… …   Wikipedia

  • Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) …   Wikipedia

  • Photometry (astronomy) — Photometry is a technique of astronomy concerned with measuring the flux , or intensity of an astronomical object s electromagnetic radiation. Usually, photometry refers to measurement over large wavelength bands of radiation; but, when not only… …   Wikipedia

  • chromatography — chromatographer, n. chromatographic /kreuh mat euh graf ik, kroh meuh teuh /, adj. chromatographically, adv. /kroh meuh tog reuh fee/, n. Chem. the separation of mixtures into their constituents by preferential adsorption by a solid, as a column… …   Universalium

  • HSL and HSV — Fig. 1. HSL (a–d) and HSV (e–h). Above (a, e): cut away 3D models of each. Below: two dimensional plots showing two of a model’s three parameters at once, holding the other constant: cylindrical shells (b, f) of constant saturation, in this case… …   Wikipedia

  • Classical Cepheid variable — Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star. They are population I, variable stars that exhibit pulsation periods in the order of a few days to months,… …   Wikipedia

  • parallax — parallactic /par euh lak tik/, adj. parallactically, adv. /par euh laks /, n. 1. the apparent displacement of an observed object due to a change in the position of the observer. 2. Astron. the apparent angular displacement of a celestial body due …   Universalium

  • Radiance — For other uses, see Radiance (disambiguation). Radiance and spectral radiance are radiometric measures that describe the amount of radiation such as light or radiant heat that passes through or is emitted from a particular area, and falls within… …   Wikipedia

  • List of gravitationally rounded objects of the Solar System — Objects in the Solar System By orbit By size By discovery date …   Wikipedia

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