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). [[Category:Radiometry| ]] {{optics-stub}} [[ca:Radiometria]] [[cs:Radiometrie]] [[de:Radiometrie]] [[es:Radiometría]] [[pl:Radiometria]] [[ru:Радиометрия]]