absolute brightness


absolute brightness
абсолютный блеск

English-russian dictionary of physics. 2013.

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  • Brightness — is an attribute of visual perception in which a source appears to emit or reflect a given amount of light. In other words, brightness is the perception elicited by the luminance of a visual target. This is a subjective attribute/property of an… …   Wikipedia

  • Absolute magnitude — In astronomy, absolute magnitude (also known as absolute visual magnitude) is the apparent magnitude an object would have if it were at a standard luminosity distance (10 parsecs, 1 AU, or 100 km depending on object type) away from the observer,… …   Wikipedia

  • absolute — adj. & n. adj. 1 complete, utter, perfect (an absolute fool; absolute bliss). 2 unconditional, unlimited (absolute authority). 3 despotic; ruling arbitrarily or with unrestricted power (an absolute monarch). 4 (of a standard or other concept)… …   Useful english dictionary

  • absolute magnitude — noun Astronomy the magnitude (brightness) of a celestial object as it would be seen at a standard distance of 10 parsecs …   English new terms dictionary

  • Absolute Magnitude —    The brightness of a star seen from a distance of ten parsecs. See Parsec …   The writer's dictionary of science fiction, fantasy, horror and mythology

  • Surface brightness — is a concept used in astronomy when describing extended astronomical objects such as galaxies and nebulae.General descriptionThe apparent magnitude of an astronomical object is generally given as an integrated value mdash;if a galaxy is quoted as …   Wikipedia

  • Sky brightness — This article is primarily about the brightness of the night sky. For daytime situations, please see Diffuse sky radiation and Rayleigh Scattering. The fact that the sky isn t absolutely dark at night can easily be observed. Were the sky (in the… …   Wikipedia

  • Intrinsic brightness — Astronomers use the term intrinsic brightness (also termed absolute magnitude) to refer to how bright a star would be without the effects of distance or absorption due to interstellar dust or gas. While a bright distant star might have apparent… …   Wikipedia

  • cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • 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