Editing Incandescent light bulb (section)

===Color rendering===
The spectrum of light produced by an incandescent lamp closely approximates that of a [[black body radiator]] at the same temperature.<ref name="Edison_Incandescent">{{cite web|url=http://www.edisontechcenter.org/incandescent.html |title=Incandescent Lamps |work=edisontechcenter.org |url-status=dead |archive-url=https://web.archive.org/web/20130314112308/http://www.edisontechcenter.org/incandescent.html |archive-date=14 March 2013}}</ref> The basis for light sources used as the standard for color perception is a tungsten incandescent lamp operating at a defined temperature.<ref>Janos Schanda (ed), ''Colorimetry: Understanding the CIE System'', John Wiley & Sons, 2007 {{ISBN|0470175621}} page 44</ref>
[[File:Spectral power distribution of a 25 W incandescent light bulb.png|thumb|Spectral power distribution of a 25&nbsp;W incandescent light bulb.]]

Light sources such as fluorescent lamps, [[high-intensity discharge lamp]]s and [[LED lamp]]s have higher luminous efficiency. These devices produce light by [[luminescence]]. Their light has bands of characteristic wavelengths, without the "tail" of invisible infrared emissions, instead of the continuous spectrum produced by a thermal source. By careful selection of fluorescent phosphor coatings or filters which modify the spectral distribution, the spectrum emitted can be tuned to mimic the appearance of incandescent sources, or other different [[color temperature]]s of white light. When used for tasks sensitive to color, such as motion picture lighting, these sources may require particular techniques to duplicate the appearance of incandescent lighting.<ref>Blain Brown, ''Motion Picture and Video Lighting'', Routledge, 2018, {{ISBN|0429866666}} Chapter 7</ref> [[Metamerism (color)|Metamerism]] describes the effect of different light spectrum distributions on the perception of color.