- 업종: Education
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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 ...
The region of the earth's upper atmosphere containing a small percentage of free electrons and ions produced by photoioniza- tion of the constituents of the atmosphere by solar ultraviolet radiation at very short wavelengths (l. T. 1000 angstroms). The ionosphere significantly influences radiowave propagation of fre- quencies less than about 30 MHz.
Industry:Physics
The ionization of an atom or molecule by the collision of a high energy photon with the particle.
Industry:Physics
Radius of orbit of charged particle about a magnetic field line. Also called gyroradius, Larmor radius.
Industry:Physics
Fluid motion in which random motions of parts of the fluid are superimposed upon a simple pattern of flow. All or nearly all fluid flow displays some degree of turbulence. The opposite is laminar flow.
Industry:Physics
Roughly circular bands around either geomagnetic pole above which there is a maximum of auroral activity. The zones lie about 10deg. to 15 deg. of geomagnetic latitude from the geomagnetic poles.
Industry:Physics
The damping of a space charge wave by electrons which move at the phase velocity of the wave and gain energy transferred from the wave.
Industry:Physics
Pioneering Swedish plasma physicist, and winner of the Nobel Prize in Physics; now deceased.
Industry:Physics
The natural period of revolution of a free electron in the Earth's magnetic field.
Industry:Physics
An instability that derives from the character of the equilibrium of an incompressible heavy fluid of variable density (i. E of a heterogeneous fluid). Of two fluids of different densities superposed one over the other; the instability of the plane interface between the two fluids, when it occurs is called the Rayleigh-Taylor Instability.
Industry:Physics
