Time reversal

Time reversal

Time reversal may refer to:

* In physics, T-symmetry - the study of thermodynamics and the symmetry of certain physical laws where the concept of time is reversed — ie. where a mirror (reverse) transformation is applied to a forward direction time state.

* Time Reversal Signal Processing - a signal processing technique popular in acoustics, and currently being applied to electromagnetics, that results from the reversal in time of a system's response signal.

* Time travel - theorised and speculative concepts about travelling physically through time.


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  • time reversal — Physics. the mathematical operation of reversing the direction of time. Symbol: T [1920 25] * * * ▪ physics       in physics, mathematical operation of replacing the expression for time with its negative in formulas or equations so that they… …   Universalium

  • time reversal — noun : a formal operation in mathematical physics that reverses the order in which a sequence of events occurs * * * Physics. the mathematical operation of reversing the direction of time. Symbol: T [1920 25] * * * time reversal, Physics. the… …   Useful english dictionary

  • Time Reversal Signal Processing — is a technique for focusing waves. A Time Reversal Mirror (TRM) is a device that can focus waves using the time reversal method. TRMs are also known as time reversal mirror arrays, as they are usually arrays of transducers, but they do not have… …   Wikipedia

  • time reversal operation — laiko apgrąžos operacija statusas T sritis fizika atitikmenys: angl. time reversal operation vok. Zeitumkehroperation, f rus. операция инверсии времени, f; операция обращения времени, f pranc. opération d’inversion de temps, f …   Fizikos terminų žodynas

  • time reversal operator — laiko apgrąžos operatorius statusas T sritis fizika atitikmenys: angl. time reversal operator vok. Zeitumkehroperator, m rus. оператор инверсии времени, m; оператор обращения времени, m pranc. opérateur d’inversion de temps, m …   Fizikos terminų žodynas

  • time reversal — noun Date: 1955 a formal operation in mathematical physics that reverses the order in which a sequence of events occurs …   New Collegiate Dictionary

  • time reversal — noun a) an operation that transforms a physical system undergoing a sequence of events into one in which the events take place in the reverse sequence b) T symmetry …   Wiktionary

  • time reversal invariance — noun : a principle in physics: if a given sequence of events is physically possible the same sequence in the opposite order is also possible …   Useful english dictionary

  • Time reversibility — is an attribute of some stochastic processes and some deterministic processes.If a stochastic process is time reversible, then it is not possible to determine, given the states at a number of points in time after running the stochastic process,… …   Wikipedia

  • Time Traveler (video game) — This article talks about the video game Time Traveler. For other uses, see Time Traveler. Infobox VG title= Hologram Time Traveler caption= Title logo developer= Virtual Image Productions (arcade), GTE Interactive Media (PC/DVD) publisher= Arcade …   Wikipedia

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