Radiometry
41625
186050485
2008-01-22T05:04:53Z
Dicklyon
869314
fix the spectroradiometry bit to something that is both sourced and sensible
In [[optics]], '''radiometry''' is the field that studies the [[measurement]] of [[electromagnetic radiation]], including [[visible light]]. Note that light is also measured using the techniques of [[photometry_(optics)|photometry]], which deal with brightness as perceived by the human eye, rather than absolute power.
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 (astronomy)|''photometry'']] in some astronomical applications, contrary to the optics usage of the term.
'''Spectroradiometry''' is the measurement of absolute radiometric quantities in narrow bands of wavelength.<ref>{{cite book|title=Focal Encyclopedia of Photography|publisher=[[Focal Press]] | author=Leslie D. Stroebel and Richard D. Zakia | year=1993 | edition=3rd ed.|page=p. 115 |isbn=0240514173 | url = http://books.google.com/books?id=CU7-2ZLGFpYC&pg=PA115&dq=spectroradiometry+intitle:%22Focal+Encyclopedia+of+Photography%22&lr=&as_brr=0&ei=o3aVR8nSMoSkiQGhl_SiBw&sig=rPCx5nkENgpC-gV4orKVH6lYUoU#PPA115,M1 }}</ref>
{{SI radiometry units}}
== See also ==
* [[Reflectivity]]
==References==
<references/>
==External links==
*[http://www.optics.arizona.edu/Palmer/rpfaq/rpfaq.htm Radiometry and photometry FAQ] Professor Jim Palmer's Radiometry FAQ page (University of Arizona).
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