thermal wavelength
1Thermal de Broglie wavelength — In physics, the Thermal de Broglie wavelength is defined for a free ideal gas of massive particles in equilibrium as:: Lambda = sqrt{frac{ h^2}{ 2pi mkT = frac {h} {(2 pi mkT)^{1/2where* h is Planck s constant * m is the mass of a gas particle *… …
2Thermal radiation — is electromagnetic radiation emitted from the surface of an object which is due to the object s temperature. Infrared radiation from a common household radiator or electric heater is an example of thermal radiation, as is the light emitted by a… …
3Thermal blooming — is an atmospheric effect, seen in high energy laser beams. It is the result of the nonlinear interaction of laser radiation with the propagation medium, usually air, which is heated by the absorption of a fraction of the radiation. The amount of… …
4Thermal Emission Imaging System — The Thermal Emission Imaging System (THEMIS) is a camera on board the 2001 Mars Odyssey orbiter. It images Mars in the visible and infrared parts of the electromagnetic spectrum in order to determine the thermal properties of the surface and to… …
5thermal neutron — ▪ physics any free neutron (one that is not bound within an atomic nucleus) that has an average energy of motion (kinetic energy) corresponding to the average energy of the particles of the ambient materials. Relatively slow and of low… …
6thermal radiation — Thermodynam. electromagnetic radiation emitted by all matter above a temperature of absolute zero because of the thermal motion of atomic particles. [1930 35] * * * Process by which energy is emitted by a warm surface. The energy is… …
7Kirchhoff's law of thermal radiation — See also Kirchhoff s laws for other laws named after Kirchhoff .In thermodynamics, Kirchhoff s law of thermal radiation, or Kirchhoff s law for short, is a general statement equating emission and absorption in heated objects, proposed by Gustav… …
8Soil thermal properties — The thermal properties of soil are a component of soil physics that has found important uses in engineering, climatology and agriculture. These properties influence how energy is partitioned in the soil profile. While related to soil temperature …
9Alkali-metal thermal to electric converter — The Alkali Metal Thermoelectric Converter (AMTEC) is a thermally regenerative electrochemical device for the direct conversion of heat to electrical energy. It is characterized by high potential efficiencies and no moving parts, which make it a… …
10Infrared and thermal testing — is one of many Nondestructive testing techniques designated by the American Society of Nondestructive Testing (ASNT) [Jackson, C.N. and C.N. Sherlock, 1998, Nondestructive Testing Handbook: Leak Testing, page 519, Library of Congress Cataloging… …
