- Industry: Education
- Number of terms: 981
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A member of the University of Texas System, UT Dallas is a public research university with 125 academic programs offered through its seven schools. Many of the university's strongest and most popular programs are in business, the sciences, and applied sciences. UTD's admissions standards are among ...
A ring shaped auroral display around the polar regions where hot plasma sheet particles move along the magnetic field lines and precipitate into the atmosphere.
Industry:Physics
Transverse electromagnetic waves that are propagated along lines of magnetic force in a plasma. The waves have frequency significantly less than the ion cyclotron frequency, and are characterized by the fact that the field lines oscillate (wiggle) with the plasma. The propagation velocity depends on the particle density and the strength of the magnetic field. Relatively low frequency ion oscillation in the presence of an equilibrium magnetic field. Also called the transverse hydromagnetic wave along Bo. The torsional Alfven wave in cylindrical geometry was first measured in liquid mercury by B. Lehnert. Alfven waves were first generated and detected in plasma by Allen, Baker, Pyle, and Wilcox in Berkeley and by Jephcott in England in 1959.
Industry:Physics
Measures the degree of wave absorption; defined as the fraction of wave energy lost as the wave travels a unit distance.
Industry:Physics
Measurement of atmospheric phenomena generally with instruments carried aloft by spacecraft, rockets, etc.
Industry:Physics
A class of plasma instabilities growing exponentially with time at a point in space, in contrast to convective instabilities.
Industry:Physics
A 3-hourly planetary geomagnetic index of activity generated in Gottingen, Germany, based on the K index from 12 or 13 stations distributed around the world.
Industry:Physics
Ordinarily particles placed in a magnetic field will simply orbit in circles, but if the magnetic field is not uniform, or curves, or there is an electrical field perpendicular to the magnetic field, or another force is applied perpendicular to the magnetic field, then the "guiding centers" of the particle orbits will drift (generally perpendicular to the magnetic field and to the applied force). There are several sorts of drifts; refer to a plasma physics text for more information.
Industry:Physics
A satellite navigation system which will display many (up to 24) satellites in three sets of orbits by means of a precise time standard and three-dimensional information on position and velocity.
Industry:Physics
