perturbed motion
11Казимирчак-Полонская, Елена Ивановна — (монахиня Елена) Е. И. Казимирчак Полонская Дата рождения: 21 ноября …
12возмущенное движение — Любое движение механической системы, отличающееся от рассматриваемого невозмущенного движения вследствие изменения начальных условий и сил. [Сборник рекомендуемых терминов. Выпуск 102. Теоретическая механика. Академия наук СССР. Комитет научно… …
13LOGVINOVICH — RUSSIA (see also List of Individuals) 10.2.1913 Smolensk/RU 10.2.2002 Moscow/RU Georgy Vladimirovich Logvinovich graduated from the Moscow State University in 1935 as a hydraulic engineer and continued in practice until 1941, when being called to …
14spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …
15perturbation — perturbational, adj. /perr teuhr bay sheuhn/, n. 1. the act of perturbing. 2. the state of being perturbed. 3. mental disquiet, disturbance, or agitation. 4. a cause of mental disquiet, disturbance, or agitation. 5. Astron. deviation of a… …
16Perturbation theory — This article describes perturbation theory as a general mathematical method. For perturbation theory as applied to quantum mechanics, see perturbation theory (quantum mechanics). Perturbation theory comprises mathematical methods that are used to …
17Astronomical seeing — Schematic diagram illustrating how optical wavefronts from a distant star may be perturbed by a layer of turbulent mixing in the atmosphere. The vertical scale of the wavefronts plotted is highly exaggerated. Astronomical seeing refers to the… …
18asteroid — asteroidal, adj. /as teuh royd /, n. 1. Also called minor planet. Astron. any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun in orbits lying mostly between those… …
19comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …
20Relaxation (physics) — In the physical sciences, relaxation usually means the return of a perturbed system into equilibrium. Each relaxation process can be characterized by a relaxation time τ. The simplest theoretical description of relaxation as function of time t is …
