- angular distances
- • ъглово разстояние
English-Bulgarian polytechnical dictionary . 2013.
angular distances
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angular distance — noun the angular separation between two objects as perceived by an observer he recorded angular distances between the stars • Hypernyms: ↑angle • Hyponyms: ↑latitude, ↑longitude, ↑declination, ↑celestial latitude, ↑ … Useful english dictionary
Angular diameter — The angular diameter or apparent size of an object as seen from a given position is the “visual diameter” of the object measured as an angle. In the vision sciences it is called the visual angle. The visual diameter is the diameter of the… … Wikipedia
Angular mil — An angular mil, also mil, is a unit of angle. All versions of the angular mil are approximately the same size as a trigonometric milliradian. Contents 1 History 2 Mathematical principle 3 Use … Wikipedia
Angular vibration — In optics the action of tilting an image forming system is to smear the image. Such aberration is constant for all distances to the subject.The opposite is linear vibration, also known as parallel vibration, where the aberration close to the… … Wikipedia
Aristarchus On the Sizes and Distances — Aristarchus s 3rd century BC calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th century CE Greek copy On the Sizes and Distances (of the Sun and Moon) (Περὶ μεγεθῶν καὶ ἀποστημάτων [ἡλίου καὶ σελήνης]) is… … Wikipedia
On Sizes and Distances — [of the Sun and Moon] (Περὶ μεγεθῶν καὶ ἀποστημάτων – Peri megethon kai apostematon) is a text by the ancient Greek astronomer Hipparchus. It is not extant, but some of its contents have been preserved in the works of Ptolemy and his commentator… … Wikipedia
Mesure des distances en cosmologie — En cosmologie physique, la mesure des distances cosmologiques consiste à fournir la valeur d une distance ou un équivalent entre deux objets ou évènements de l Univers. On utilise souvent les mesures pour lier des quantités observables telles que … Wikipédia en Français
Hipparchus On Sizes and Distances — On Sizes and Distances [of the Sun and Moon] ( Peri megethoon kai apostèmátoon ) is a text by the ancient Greek astronomer Hipparchus. It is not extant, but some of its contents have been preserved in the works of Ptolemy and his commentator… … Wikipedia
lunar distances — plural noun A method of finding longitude by comparison of the observed angular distance of the moon from a star at a known local time, with the tabulated angular distance at a certain Greenwich time • • • Main Entry: ↑lunar … Useful english dictionary
SN 1054 — Supernova SN 1054 The Crab Nebula, remnant of SN 1054. Credit: NASA/ESA. Observation data (Epoch ?) Supernova type … Wikipedia
Reflecting instrument — Reflecting instruments are those that use mirrors to enhance their ability to make measurements. In particular, the use of mirrors permits one to observe two objects simultaneously while measuring the angular distance between the objects. While… … Wikipedia
