- Relative Proper Motion
- Physiology: RPM
Универсальный русско-английский словарь. Академик.ру. 2011.
Relative Proper Motion
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Proper motion — The proper motion of a star is its angular change in position over time as seen from the center of mass of the solar system.[1] It is measured in seconds of arc per year, arcsec/yr, where 3600 arcseconds equal one degree.[2] This contrasts with… … Wikipedia
proper motion — Astron. the angular motion of a star relative to a suitably defined frame of reference, expressed in seconds of arc per year. Cf. tangential motion. [1595 1605] * * * Apparent motion of a star across the celestial sphere at right angles to the… … Universalium
proper motion — noun Astronomy the part of the apparent motion of a star due to its actual movement in space relative to the sun … English new terms dictionary
proper motion — noun The change in apparent position of a celestial body due to that bodys velocity relative to the Sun … Wiktionary
Motion — Mo tion, n. [F., fr. L. motio, fr. movere, motum, to move. See {Move}.] 1. The act, process, or state of changing place or position; movement; the passing of a body from one place or position to another, whether voluntary or involuntary; opposed… … The Collaborative International Dictionary of English
Motion block — Motion Mo tion, n. [F., fr. L. motio, fr. movere, motum, to move. See {Move}.] 1. The act, process, or state of changing place or position; movement; the passing of a body from one place or position to another, whether voluntary or involuntary;… … The Collaborative International Dictionary of English
Proper velocity — η.In flat spacetime, proper velocity is the ratio between distance traveled relative to a reference map frame (used to define simultaneity) and proper time τ elapsed on the clocks of the traveling object. It equals the object s momentum p divided … Wikipedia
motion — motional, adj. motioner, n. /moh sheuhn/, n. 1. the action or process of moving or of changing place or position; movement. 2. power of movement, as of a living body. 3. the manner of moving the body in walking; gait. 4. a bodily movement or… … Universalium
proper — adj., adv., & n. adj. 1 a accurate, correct (in the proper sense of the word; gave him the proper amount). b fit, suitable, right (at the proper time; do it the proper way). 2 decent; respectable, esp. excessively so (not quite proper). 3 (usu.… … Useful english dictionary
Proper time — In relativity, proper time is time measured by a single clock between events that occur at the same place as the clock. It depends not only on the events but also on the motion of the clock between the events. An accelerated clock will measure a… … Wikipedia
Center of motion — Motion Mo tion, n. [F., fr. L. motio, fr. movere, motum, to move. See {Move}.] 1. The act, process, or state of changing place or position; movement; the passing of a body from one place or position to another, whether voluntary or involuntary;… … The Collaborative International Dictionary of English
