Thermal Radiation
If the characteristics of the emitted radiation depend on the temperature of the source, the radiation is known as 'thermal radiation'.
thermal radiation
electromagnetic radiation emanating from any object not at absolute zero
tidal force ...
THERMAL RADIATION - Emitted radiation, the characteristics of which depend on the temperature of the source.
Thermal Radiation
Blackbody radiation; radiation caused by the high temperature of the radiating objects, as opposed to nonthermal radiation, which is caused by energetic (not necessarily hot) electrons.
Thermalization ...
Non-Thermal Radiation
Radiation emitted by energetic particles for reasons other than high temperature of the source. The spectrum of nonthermal radiation is different from that predicted by Planck's law for a blackbody. [H76] ...
[edit] Thermal radiation and electromagnetic radiation as a form of heat
Main article: Thermal radiation ...
Thermal Radiation
Radiation released by virtue of an object's heat, namely, the transfer of heat energy into the radiative energy of electromagnetic waves.
thermal radiation (black body radiation)
incandescent light bulbs
sunlight
glowing solid particles in flames (see fire) ...
Thermal radiation has been observed to emanate from the surface or atmosphere of all of the planets except Pluto.
thermal radiation - The radiation emitted by any body or gas that is not at absolute zero.
nonthermal radiation - (n.)
Radiation that cannot be characterized by a single number (the temperature). Normally, we derive this number from Planck's law, so that radiation that does not follow Planck's law is called nonthermal.
nova - (n.) ...
non-thermal radiation Radiation released by virtue of a fast-moving charged particle (such as an electron) interacting with a magnetic force field or other particles; this process has nothing to do with heat.
Now thermal radiation is not emitted only at the peak wavelength. There is a complete spectrum of radiation emitted; it simply has a peak at the wavelength given by Wien's law.
basic thermal radiation (NASA SP-7, 1965) Thermal radiation from a quiet sun. basin boundary (Glossary of Hydrologic Terms - NOAA) The topographic dividing line around the perimeter of a drainage basin, beyond which overland flow (i.e.
basic thermal radiation Thermal radiation from a quiet sun. baud A unit of signaling speed. The speed in bauds is the number of code elements per second.
Nonthermal Radiation Radiation emitted by nonthermal electrons.
Nucleus The positively charged core of an atom, consisting of protons and neutrons (except for hydrogen), around which electrons orbit.
* 1926 - Sir Arthur Eddington estimates the non-thermal radiation of starlight in the galaxy ".. by the formula E = σT4 the effective temperature corresponding to this density is 3.18º absolute .. black body"Eddington, A.
greenhouse effect increase in temperature caused when incoming solar radiation is passed but outgoing thermal radiation is blocked by the atmosphere (carbon dioxide and water vapor are the major factors).
This is a compact infrared spectrometer designed to determine the mineralogy of rocks and soils from a distance by measuring their patterns of thermal radiation.
This image shows thermal radiation from the day and night sides of Saturn's moon Phoebe, taken by the composite infrared spectrometer onboard Cassini 1.8 hours before the spacecraft's closest approach to Phoebe on June 11, 2004.
The primary source of infrared radiation is heat or thermal radiation. This is the radiation produced by the motion of atoms and molecules in an object.
The circulation of the atmosphere occurs due to thermal differences when convection becomes a more efficient transporter of heat than thermal radiation.
The energy of the non-thermal radiation beam comes from the rotational energy of the pulsar.
Hawking radiation is a thermal radiation with a black body predicted to be emitted by black holes due to quantum physics effects.
Clearly, the Earth is on the average warmer than that, and the reason that is so is because the "greenhouse gases" in the Earth's atmosphere block the escape of infrared thermal radiation back into space by absorbing it and reemitting it -- ...
The Mars Global Surveyor Thermal Emission Spectrometer (TES) measured the brightness of thermal radiation at the same time the camera acquired this image of Phobos.
as the 1940s, physicists had realized that in addition to being extremely dense, the early universe must also have been very hot and that shortly after the Big Bang the universe must have been filled with extremely high energy thermal radiation"gamma ...
Mini-TES determines the mineralogy of rocks and soil from a distance by detecting their patterns of thermal radiation.
In this technique, light or thermal radiation from the planet is spread out in wavelengths (colours, in visible light, as in a rainbow) by the dispersing element in a spectrograph.
The high temperature associated with the early universe would give rise to a thermal radiation field, which has a unique distribution of intensity with wavelength (known as Planck's radiation law), that is a function only of the temperature.
The 'green' central region is due to thermal radiation from Jupiter's atmosphere, which is faint at 22 cm (L band).
Given a warm surface and a cool atmosphere, radiation detectors receive thermal radiation from the surface at transparent wavelengths and from various atmospheric heights at opaque wavelengths.
BL Lac Object (also Blazar): A type of active galaxy characterized by very rapid (day to day) variability by large percentages in total luminosity, no emission lines, strong nonthermal radiation, and starlike appearance.
The hawking radiation corresponds exactly to perfectly normal thermal radiation from a blackbody object, and can be used to calculate the 'surface temperature' of the black hole.
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I like it! ...
Even at the epoch when black dwarfs exist they will be extremely difficult to detect, emitting thermal radiation at a temperature not much above that of the cosmic microwave background radiation.
control louvers, installed on spacecraft electronics bays and on some instruments and subsystems, operate automatically. Based on a simple bi-metallic device not unlike that in a houshold thermostat, the louvers open to release thermal radiation to ...
It does have an extremely sensitive radio receiver that may be able to detect thermal radiation from the impact fireballs once they rise sufficiently high above interference from the Jovian ionosphere (upper atmosphere) and to measure a precise time ...
If the most powerful radio galaxies, seen to large redshift, are to be identified with normal elliptical galaxies seen at more recent epochs, and if their colors are generally dominated by starlight and not scattered nonthermal radiation, ...
However, SN 1006 does not fit neatly into this picture, apparently showing extended emission of continuum X-rays. There was much debate on whether this was synchrotron radiation, a peculiar kind of thermal radiation, or something else.
We'll run across more non-thermal radiation sources later. Any ways, synchrotron radiation is mainly found in the radio part of the spectrum, which is exactly why Jocelyn Bell and the Cambridge radio telescope detected it.
 See also: Temperature, Light, Energy, Wavelength, Time
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