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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 ...
Any penetration of the natural environment for scientific observation usually by sounding rockets or balloons.
Industry:Physics
It is the limit at which information can be carried in collisionless solar wind plasma. Phase velocity of the Alfven wave; equal to the speed of light divided by the square root of (1 plus the ratio of the plasma frequency to the cyclotron frequency for a given species). i.e.,
<center>Va = c / SQRT(1 + plasma freq. / cyclotron freq. )
(As defined in Stix, _Waves in Plasmas_, 2nd ed. 1992, p. 31) </center>
Industry:Physics
The serial number assigned to 27-day rotation periods of solar and geophysical parameters. Rotation 1 in this sequence was assigned arbitrarily by Bartel to begin in January 1833.
Industry:Physics
The aggregate of extremely high energy subatomic particles which travel the solar system and bombard the earth from all directions. Cosmic ray primaries seem to be mostly protons, hydrogen nuclei, but also contain heavier nuclei. On colliding with atmospheric particles they produce many different kinds of lower energy secondary cosmic radiation.
Industry:Physics
The electrical polarization of a horizontal conducting sheet of limited extent, when that sheet moves laterally through a magnetic field having a component vertical to the sheet. The Hall effect is important in determining the behavior of the electrical currents generated by winds in the lower atmosphere.
Industry:Physics
A measure of the shielding distance or thickness of the sheath under debye shielding.
Industry:Physics
Deflection of incident particle / radiation through an angle greater than 90 degrees relative to the original direction of motion/propagation.
Industry:Physics
Angular distances from the geomagnetic equator, measured northward of southward through 90 degrees and labeled N or S to indicate the direction of measurement.
Industry:Physics
In plasma physics, diffusion due solely to scattering (collisions) of charged particles (with unlike charges) via electrical ("Coulomb") interactions.
Industry:Physics
A proton electron gas that streams past the Earth with a mean velocity of 400-500 km/sec and a mean proton and electron density of about 5 cm<sup>-3</sup>.
Industry:Physics
