zenith sky

См. также в других словарях:

• 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

• zenith — ► NOUN 1) the point in the sky directly overhead. 2) the highest point in the sky reached by a given celestial object. 3) the time at which something is most powerful or successful. DERIVATIVES zenithal adjective. ORIGIN from an Arabic phrase… …   English terms dictionary

• Zenith Hourly Rate — is a concept used by meteor shower observers. It represents the maximum theoretical rate of meteors that would be visible to an observer, if the radiant of the shower was at the zenith and the sky was free of any light pollution. Because the ZHR… …   Wikipedia

• zenith — [zē′nith; ] Brit, & often Cdn [, zen′ith] n. [ME senyth < MFr cenith < ML cenit < senit, scribal error for Ar samt, road, path (as in samt al raʾs, zenith, lit., way of the head) < L semita, path, way] 1. the point directly overhead… …   English World dictionary

• Zenith (disambiguation) — The zenith is the point in the sky that appears directly above the observer. (opposite: nadir). In general, zenith may mean highest point , used in sentences like Mount Everest is the zenith of the world. Zenith may also mean:In aviation:* A… …   Wikipedia

• Sky — The sky is the part of the atmosphere or of outer space visible from the surface of any astronomical object. It is difficult to define precisely for several reasons. During daylight, the sky of Earth has the appearance of a deep blue surface… …   Wikipedia

• sky —   Lani, aouli, lewa.    ♦ Base of sky, kumulani.    ♦ Region just below horizon, kūkulu o ka honua.    ♦ Region just above horizon, kūkulu o ka lani, hiki kū.    ♦ Region above, hiki kū, hiki ka papa nui; region above that, hiki ka papa lani.… …   English-Hawaiian dictionary

• zenith — noun /ˈzɛn.ɪθ,ˈzi.nɪθ/ a) The point in the sky vertically above a given position or observer; the point in the celestial sphere opposite the nadir. The 12 day wee had the wind high and large ſo that in two dayes ſaile we made the Sunne our Zenith …   Wiktionary

• zenith — zen|ith [ˈzenıθ US ˈzi: ] n [C usually singular] [Date: 1300 1400; : Old French; Origin: cenith, from Arabic samt (ar ra s) path (above the head) ] 1.) the most successful point in the development of something = ↑peak ≠ ↑nadir reach its zenith/be …   Dictionary of contemporary English

• zenith — noun (countable usually singular) 1 the most successful point in the development of something: reach its zenith/be at its zenith: Opera reached its zenith at the turn of the century. 2 the highest point that is reached by the sun or the moon in… …   Longman dictionary of contemporary English

• zenith — UK [ˈzenɪθ] / US noun [countable, usually singular] Word forms zenith : singular zenith plural zeniths 1) literary the time when someone or something is most successful or effective 2) the point in the sky where the sun or moon is highest above… …   English dictionary