- object brightness
- Техника: яркость объекта
Универсальный англо-русский словарь. Академик.ру. 2011.
object brightness
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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
Brightness temperature — is the temperature at which a blackbody in thermal equilibrium with its surroundings would have to be in order to duplicate the observed intensity of an object at a frequency u.This is a useful concept only for radiation that obeys the… … Wikipedia
brightness constancy — noun the tendency for a visual object to be perceived as having the same brightness under widely different conditions of illumination • Hypernyms: ↑constancy, ↑perceptual constancy … Useful english dictionary
brightness — noun a) the quality of being bright b) the perception elicited by the luminance of an object … Wiktionary
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
Tolman surface brightness test — A Tolman surface brightness test is a comparison of the surface brightness of galaxies as a function of their redshift (measured as z ). Such a comparison was first proposed in 1930 by Richard C. Tolman as a test of whether the universe is… … Wikipedia
Classical Kuiper belt object — The orbits of various cubewanos compared to the orbit of Neptune (blue) and Pluto (pink) … 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
Herbig-Haro object — Herbig Haro objects are small patches of nebulosity associated with newly born stars, and are formed when gas ejected by young stars collides with clouds of gas and dust nearby at speeds of several hundred kilometres per second. Herbig Haro… … Wikipedia
unidentified flying object — also called flying saucer any aerial object or optical phenomenon not readily identifiable to the observer. UFOs became a major subject of interest following the development of rocketry after World War II and were thought by some… … Universalium
Lowell Observatory Near-Earth-Object Search — (LONEOS) was a project designed to discover asteroids and comets that orbit near the Earth. The project, funded by NASA, was directed by Dr. Ted Bowell of Lowell Observatory in Flagstaff, Arizona. The LONEOS project began in 1993 and ran until… … Wikipedia
