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Encyclopedia > Radiometry

In telecommunication and physics, radiometry is the science of radiation measurement.

SI radiometry units

edit  (http://en.wikipedia.org/w/index.php?title=Template:SI_radiometry_units&action=edit)

Quantity SI unit Symbol Notes
radiant energy joule J energy
radiant flux watt W radiant energy per unit time, also called radiant power
radiant intensity watts per steradian W · sr-1 power per unit solid angle
radiance watts per steradian per square metre W · sr-1 · m-2 power per unit solid angle per unit area
irrradiance watts per square metre W · m-2 power per unit area, also called radiant emittance or radiant exitance
spectral radiance watt per steradian per cubic metre W · sr-1 · m-3 commonly measured in W sr-1m-2nm-1
spectral irradiance watt per cubic metre W · m-3 commonly measured in W m-2 nm-1

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  Results from FactBites:
 
Radiometry - Wikipedia, the free encyclopedia (151 words)
In optics, radiometry is the field that studies the measurement of electromagnetic radiation, including visible light.
Radiometry is important in astronomy, especially radio astronomy, and is important for Earth remote sensing.
The measurement techniques categorized as radiometry in optics are called photometry in some astronomical applications, contrary to the optics usage of the term.
manualna medicina (958 words)
This paper discusses developments in the medical users of microwave radiometry, particularly in relation to the detection of cancer, as well as significance of and progress in related antenna technology.
We discuss in the following microwave thermography, or, more correctly, radiometry, with is defined as the measurement of natural electromagnetic radiation or emission from the body at microwave frequencies to allow the detection and diagnosis of pathologic conditions in which there are disease related temperature differentials.
Present detection techniques other than radiometry require that the tumor have mass and contrast with respect to the surrounding tissue (i.e., palpation physical examination, mammography, ultrasonography and diaphonography).
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