Editing Neon lamp (section)

==Color==
[[Image:Glimmlampe spektrum.jpg|thumb|left|200px|Unlit and lit neon lamps (NE-2 type) and their light [[spectrum]]. |alt=Graphic consisting of four photographs. A row of three photographs at the top all show similar glass capsules with electrodes inside. The left photograph shows the construction of the capsule under normal lighting. The middle photograph shows the capsule with one of the two electrodes glowing. The right photograph shows the capsule with both electrodes glowing. Underneath the row of photographs of the capsule is a photograph of a spectroscope's scale; the scale runs from 700 nm to 400 nm; there are numerous red, orange, and yellow colored lines in the region between 660 and 600 nm, but no lines for readings smaller than 590 nm.]]

Neon indicator lamps are normally orange, and are frequently used with a colored filter over them to improve contrast and change their color to red or a redder orange.

[[Image:NE2COLORED.JPG|thumb|right|Phosphor-colored neon lamps]]
They can also be filled with [[argon]], [[krypton]], or [[xenon]] rather than neon, or mixed with it. While the electrical operating characteristics remain similar, these lamps light with a bluish glow (including some [[ultraviolet]]) rather than neon's characteristic reddish-orange glow. Ultraviolet radiation then can be used to excite a [[phosphor]] coating inside of the bulb and provide a wide range of various colors, including white.<ref>{{cite book |title=Phosphor handbook |last1=Yen |first1=William M. |last2=Yamamoto |first2=Hajime |publisher=CRC Press |year=2007 |page=442 |url=https://books.google.com/books?id=I9O1K20-uo4C&pg=PA442 |isbn=978-0-8493-3564-8 |url-status=live |archive-url=https://web.archive.org/web/20180114235507/https://books.google.com/books?id=I9O1K20-uo4C&pg=PA442 |archive-date=2018-01-14 }}</ref> A mixture of 95% neon, 2.5% [[krypton]], and 2.5% argon can be used for a green glow,<ref>{{cite web|last1=Bogard|first1=Scott|title=Plasma Globe Colors|url=http://www.personal.psu.edu/sdb229/Plasma%20ball%20colors.html|website=Scott Bogard's E-Profile|access-date=22 April 2016|url-status=live|archive-url=https://web.archive.org/web/20160509030653/http://www.personal.psu.edu/sdb229/Plasma%20ball%20colors.html|archive-date=9 May 2016}}</ref> but nevertheless "green neon" lamps are more commonly phosphor-based.

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