known distances
1On 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… …
2Hipparchus 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… …
3Aristarchus 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… …
4lunar 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 …
5cosmos — /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… …
6Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… …
7Multilateration — is a navigation technique based on the measurement of the difference in distance to two or more stations at known locations that broadcast signals at known times. Unlike measurements of absolute distance or angle, measuring the difference in… …
8Locating engine — Articleissues refimprove=May 2008 essay=May 2008A locating engine performs the computing of coordinates of locations of objects and of persons based on methods of multilateration or triangulation. This applies mainly with real time locating… …
9Telescopic sight — Scope redirects here. For other uses, see Scope (disambiguation). View through a 4x rifle scope. A telescopic sight, commonly called a scope, is a sighting device that is based on an optical refracting telescope. They are equipped with some form… …
10Multidimensional scaling — (MDS) is a set of related statistical techniques often used in information visualization for exploring similarities or dissimilarities in data. MDS is a special case of ordination. An MDS algorithm starts with a matrix of item–item similarities,… …
