Phase
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Phase or phases may refer to:
In science
In physics
- Phase (matter) In the physical sciences, a phase is a region of space , throughout which all physical properties of a material are essentially uniform. Examples of physical properties include density, index of refraction, and chemical composition. A simple description is that a phase is a region of material that is chemically uniform, physically distinct, and (, a physically distinctive form of a substance, such as the solid, liquid, and gaseous states of ordinary matter
- Phase transition A phase transition is the transformation of a thermodynamic system from one phase or state of matter to another is the transformation of a thermodynamic system from one phase to another
- Phase (separation science)
- Mobile phase Elution is a term used in analytical and organic chemistry to describe the emergence of chemicals from the column of a chromatograph. As they elute, the chemicals typically flow into a detector. Predicting and controlling the order of elution is a key aspect of column chromatographic methods and Stationary phase in chromatography Chromatography is the collective term for a set of laboratory techniques for the separation of mixtures. It involves passing a mixture dissolved in a "mobile phase" through a stationary phase, which separates the analyte to be measured from other molecules in the mixture based on differential partitioning between the mobile and
- Aqueous phase and organic phase in liquid-liquid extraction Liquid-liquid extraction, also known as solvent extraction and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. It is an extraction of a substance from one liquid phase into another liquid phase. Liquid-liquid extraction is a basic
- Phase (waves) The phase of an oscillation or wave is the fraction of a complete cycle corresponding to an offset in the displacement from a specified reference point at time t = 0. Phase is a frequency domain or Fourier transform domain concept, and as such, can be readily understood in terms of simple harmonic motion. The same concept applies to wave motion,, the initial angle of a sinusoidal function at its origin
- Polyphase system A polyphase system is a means of distributing alternating current electrical power. Polyphase systems have three or more energized electrical conductors carrying alternating currents with a definite time offset between the voltage waves in each conductor. Polyphase systems are particularly useful for transmitting power to electric motors. The most, a means of distributing alternating current electric power in multiple conducting wires with definite phase offsets
- Single-phase electric power In electrical engineering, single-phase electric power refers to the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison. Single-phase distribution is used when loads are mostly lighting and heating, with few large electric motors. A single-phase supply connected to an
- Three-phase electric power Three-phase electric power is a common method of alternating-current electric power transmission. It is a type of polyphase system, and is the most common method used by electric power distribution grids worldwide to distribute power. It is also used to power large motors and other large loads. A three-phase system is generally more economical
- Phase problem, the loss of information (the phase) from a physical measurement
- Phase factor A phase factor is the factor representing the phase of a phasor (eiθ). It is a complex number of absolute value 1. Multiplying the equation of a plane wave (Aei(k·r−ωt)) by the phase factor offsets the phase of the wave by θ, a complex scalar used in quantum mechanics
- Continuous Fourier transform, the angle of a complex coefficient representing the phase of one sinusoidal component
- Instantaneous phase When is constrained to an interval such as or it is called the wrapped phase. Otherwise it is called unwrapped, which is a continuous function of argument assuming is a continuous function of Unless otherwise indicated, the continuous form should be inferred, generalization for both cyclic and non-cyclic phenomena
In other sciences
- Archaeological phase, a discrete period of occupation at an archaeological site
- Lunar phase A lunar phase or phase of the moon refers to the appearance of the illuminated portion of the Moon as seen by an observer, usually on Earth. The lunar phases vary cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon and Sun. One half of the lunar surface is always illuminated by the Sun , and, the appearance of the Moon as viewed from the Earth
- Planetary phase, the appearance of the illuminated section of a planet
- Phase, in biology, a part of the cell cycle The cell cycle, or cell-division cycle, is the series of events that takes place in a cell leading to its division and duplication . In cells without a nucleus (prokaryotic), the cell cycle occurs via a process termed binary fission. In cells with a nucleus (eukaryotes), the cell cycle can be divided in two brief periods: interphase—during which in which cells divide and reproduce
In entertainment
- "Phases" (Buffy episode) "Phases" begins with Willow's increasing frustration that Oz shows no sign of wanting to get serious — not to mention physical — with her. Cordelia is frustrated with Xander because he keeps talking about Willow, even while making out in Sunnydale's lover's lane under a beautiful full moon. They are attacked by a werewolf that rips a, an episode of the TV series Buffy the Vampire Slayer
- Phases (.hack), fictional monsters in the .hack franchise
- Phase IV Phase IV is an American science fiction film, made in 1974. It is the only feature-length film directed by the noted title designer Saul Bass. It starred Nigel Davenport, Michael Murphy, Lynne Frederick and Helen Horton, a 1974 science fiction movie directed by Saul Bass
- Phase, an incarnation of the DC Comics character usually known as Phantom Girl
Other uses
- Phase (syntax), a syntactic domain hypothesized by Noam Chomsky
- Phase 10, a card game created by Fundex Games
- Phase (game) Phase is a music-themed iPod game created by Harmonix exclusively for the iPod click wheel interface. It is similar to other Harmonix games Amplitude and FreQuency, a music game for the iPod developed by Harmonix Music Systems
- Phase (combat) A Phase in combat is usually a period within a military operation of a longer duration that is a part of a serial chain of logically connected activities planned to culminate in a defined objective or goal usually a period of combat within a larger military operation
- A musical composition using Steve Reich's phasing In the compositional technique phasing, popularized by composer Steve Reich, the same part is played on two musical instruments, in steady but not identical tempo. Thus, the two instruments gradually shift out of unison, creating first a slight echo as one instrument plays a little behind the other, then a doubling with each note heard twice, then technique
See also
- Phasing (disambiguation)
- Faze (disambiguation)
- Phaser (disambiguation)
- Phasor (disambiguation)
- FASOR (disambiguation)
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forexyard.com
Thu, 22 Jul 2010 14:51:19 GMT+00:00
Forexyard "This is expected to be a phase 1 clearance," the source said, adding the airlines had not offered any commitments to the regulator as there were no direct ...
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FireWire pc mac terratec Phase 24 FW 2 862 318 00 $ 2 691 299 00 $
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AA Ionin, SI Kudryashov, and LV Seleznev
Fri, 16 Jul 2010 04:00:00 GM
Surface vaporization of molten graphite at low intensities Ipeak<0.15 GW/cm2 was observed to transform into its near-critical . phase. explosion (intense homogeneous boiling) at the threshold intensity IPE 0.15 GW/cm2 in the form of a ...
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