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Radiation Hydrodynamics
The discipline of radiation hydrodynamics is the branch of hydrodynamics in which the moving fluid absorbs and emits electromagnetic radiation, and in so doing modifies its dynamical behavior. That is, the net gain or loss of energy by parcels of the fluid material through absorption or emission of radiation are sufficient to change the pressure of the material, and therefore change its motion; alternatively, the net momentum exchange between radiation and matter may alter the motion of the matter directly. Ignoring the radiation contributions to energy and momentum will give a wrong prediction of the hydrodynamic motion when the correct description is radiation hydrodynamics. Of course, there are circumstances when a large quantity of radiation is present, yet can be ignored without causing the model to be in error. This happens when radiation from an exterior source streams through the problem, but the latter is so transparent that the energy and momentum coupling is negligible. Everything we say about radiation hydrodynamics applies equally well to neutrinos and photons (apart from the Einstein relations, specific to bosons), but in almost every area of astrophysics neutrino hydrodynamics is ignored, simply because the systems are exceedingly transparent to neutrinos, even though the energy …
Date:
October 16, 2003
Creator:
Castor, J. I.
System:
The UNT Digital Library
A Field Guide to Gas Stations in Texas
This field guide is organized as an easy reference book to gas stations in Texas, addressing the history and development of gas stations and oil companies operating in Texas and discussing registration requirements for gas stations.
Date:
October 2003
Creator:
Jones, W. Dwayne
System:
The Portal to Texas History
FCC Record, Volume 18, No. 27, Pages 19197 to 20022, September 24 - October 3, 2003
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
October 2003
Creator:
United States. Federal Communications Commission.
System:
The UNT Digital Library
FCC Record, Volume 18, No. 30, Pages 21851 to 22836, October 22 - October 31, 2003
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
October 2003
Creator:
United States. Federal Communications Commission.
System:
The UNT Digital Library
FCC Record, Volume 18, No. 29, Pages 21005 to 21850, October 15 - October 21, 2003
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
October 2003
Creator:
United States. Federal Communications Commission.
System:
The UNT Digital Library
FCC Record, Volume 18, No. 28, Pages 20023 to 21004, October 6 - October 14, 2003
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
October 2003
Creator:
United States. Federal Communications Commission.
System:
The UNT Digital Library