time-periodic field

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• Time — • Article explores two questions, What are the notes, or elements, contained in the subjective representation of time? and To what external reality does this representation correspond? Catholic Encyclopedia. Kevin Knight. 2006. Time     Time …   Catholic encyclopedia

• Time in physics — In physics, the treatment of time is a central issue. It has been treated as a question of geometry. One can measure time and treat it as a geometrical dimension, such as length, and perform mathematical operations on it. It is a scalar quantity… …   Wikipedia

• Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… …   Wikipedia

• time perception — Introduction       experience or awareness of the passage of time.       The human experience of change is complex. One primary element clearly is that of a succession of events, but distinguishable events are separated by more or less lengthy… …   Universalium

• Periodic boundary conditions — In molecular dynamics, periodic boundary conditions (PBC) are a set of boundary conditions used to simulate an effectively infinitely tiled system, usually applied to systems consisting of one or more macromolecules in a bath of explicit solvent …   Wikipedia

• Time-evolving block decimation — The time evolving block decimation (TEBD) algorithm is a numerical scheme used to simulate one dimensional quantum many body systems, characterized by at most nearest neighbour interactions.It is dubbed Time evolving Block Decimation because it… …   Wikipedia

• Magnetic field of celestial bodies — See also Earth s magnetic field The magnetic field of a rotating body of conductive gas or liquid develops self amplifying electric currents, and thus a self generated magnetic field, due to a combination of differential rotation (different… …   Wikipedia

• Alternative periodic tables — are chemical element displays different from the well known Mendeleev periodic table. Several have been devised often purely for didactic reasons as not all correlations between the chemical elements are effectively captured by the standard… …   Wikipedia

• Thermal quantum field theory — In theoretical physics, thermal quantum field theory or finite temperature field theory (or, shorter, thermal field theory ) is a set of methods to calculate expectation values of physical observables of a quantum field theory at finite… …   Wikipedia

• Quasi-periodic oscillations — In high energy (X ray) astronomy, quasi periodic oscillations (QPOs) refer to the way the X ray light from an astronomical object flickers about certain frequencies. In these situations, the X rays are emitted near the inner edge of an accretion… …   Wikipedia

• Imaginary time — in quantum mechanics Imaginary time is a concept derived from quantum mechanics and is essential in connecting quantum mechanics with statistical mechanics. Imaginary time scriptstyle au is obtained from real time via a Wick rotation by… …   Wikipedia