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almost periodic motion

См. также в других словарях:

  • Periodic function — Not to be confused with periodic mapping, a mapping whose nth iterate is the identity (see periodic point). In mathematics, a periodic function is a function that repeats its values in regular intervals or periods. The most important examples are …   Wikipedia

  • Quasiperiodic motion — In mathematics and theoretical physics, quasiperiodic motion is in rough terms the type of motion executed by a dynamical system containing a finite number (two or more) of incommensurable frequencies. That is, if we imagine that the phase space… …   Wikipedia

  • celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… …   Universalium

  • Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

  • chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …   Universalium

  • vibration — vibrational, adj. vibrationless, adj. /vuy bray sheuhn/, n. 1. the act of vibrating. 2. the state of being vibrated. 3. Physics. a. the oscillating, reciprocating, or other periodic motion of a rigid or elastic body or medium forced from a… …   Universalium

  • Precession (astronomy) — In astronomy, precession refers to the movement of the rotational axis of a body, such as a planet, with respect to inertial space. In particular, it refers to the precession of the Earth s rotational axis, also called the precession of the… …   Wikipedia

  • Iran — /i ran , i rahn , uy ran /, n. a republic in SW Asia. 67,540,002; ab. 635,000 sq. mi. (1,644,650 sq. km). Cap.: Teheran. Formerly (until 1935), Persia. * * * Iran Introduction Iran Background: Known as Persia until 1935, Iran became an Islamic… …   Universalium

  • building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

  • The Mechanical Universe — Infobox Television show name = The Mechanical Universe caption = format = Physics camera = picture format = audio format = runtime = creator = Dr. James F. Blinn developer = producer = executive producer = starring = Dr. David Goodstein narrated …   Wikipedia

  • Quasiperiodic function — In mathematics, a function f is said to be quasiperiodic with quasiperiod (sometimes simply called the period ) omega; if for certain constants a and b , ensp; f satisfies the functional equation: f(z + omega) = exp(az+b) f(z). An example of this …   Wikipedia

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