Editing Fluorescent lamp (section)

==Other fluorescent lamps==
===Black light===
Blacklights are a subset of fluorescent lamps that are used to provide [[Ultraviolet|UVA]] light (at about 360&nbsp;nm wavelength). They are built in the same fashion as conventional fluorescent lamps but the glass tube is coated with a phosphor that converts the short-wave UV within the tube to long-wave UV rather than to visible light. They are used to provoke fluorescence (to provide dramatic effects using [[blacklight paint]] and to detect materials such as urine and certain dyes that would be invisible in visible light) as well as to attract insects to [[bug zapper]]s.{{paragraph}} So-called ''blacklite blue'' lamps are also made from more expensive deep purple glass known as [[Wood's glass]] rather than clear glass. The deep purple glass filters out most of the visible colors of light directly emitted by the mercury-vapor discharge, producing proportionally less visible light compared with UV light. This allows UV-induced fluorescence to be seen more easily (thereby allowing [[blacklight poster]]s to seem much more dramatic). The blacklight lamps used in bug zappers do not require this refinement so it is usually omitted in the interest of cost; they are called simply ''[[blacklite]]'' (and not blacklite blue).

===Tanning lamp===
The lamps used in [[tanning beds]] contain a different phosphor blend (typically 3 to 5 or more phosphors) that emits both UVA and UVB, provoking a [[sun tanning|tanning]] response in most human skin. Typically, the output is rated as 3–10% UVB (5% most typical) with the remaining UV as UVA. These are mainly high output 100W lamps, although 160W very high output are somewhat common. One common phosphor used in these lamps is lead-activated barium disilicate, but a europium-activated strontium fluoroborate is also used. Early lamps used [[thallium]] as an activator, but emissions of thallium during manufacture were toxic.{{sfn|Kane|Sell|2001|p=120}}

===UVB medical lamps===
The lamps used in [[phototherapy]] contain a phosphor that emits only UVB ultraviolet light.{{citation needed|date=August 2016}} There are two types: broadband UVB that gives 290–320 nanometer with peak wavelength of 306&nbsp;nm, and narrowband UVB that gives 311–313 nanometer. Because of the longer wavelength, the narrowband UVB bulbs do not cause erythema in the skin like the broadband.{{dubious|date=January 2019}} They requires a 10–20 times higher dose to the skin and they require more bulbs and longer exposure time. The narrowband is good for psoriasis, eczema (atopic dermatitis), vitiligo, lichen planus, and some other skin diseases.{{citation needed|date=August 2016}} The broadband is better for increasing Vitamin D3 in the body.

===Grow lamp===
[[Grow lamp]]s contain phosphor blends that encourage [[photosynthesis]], growth, or flowering in plants, algae, photosynthetic bacteria, and other light-dependent organisms. These often emit light primarily in the red and blue color range, which is absorbed by [[chlorophyll]] and used for photosynthesis in plants.<ref>{{cite journal |vauthors=Goins GD, Yorio NC, Sanwo MM, Brown CS |title=Photomorphogenesis, photosynthesis, and seed yield of wheat plants grown under red light-emitting diodes (LEDs) with and without supplemental blue lighting |journal=[[Journal of Experimental Botany]] |date=1997 |volume=48 |issue=7|pages=1407–1413 |doi=10.1093/jxb/48.7.1407|pmid=11541074 |doi-access=free }}</ref>

===Infrared lamps===
Lamps can be made with a lithium metaluminate phosphor activated with iron. This phosphor has peak emissions between 675 and 875 nanometers, with lesser emissions in the deep red part of the visible spectrum.{{sfn|Kane|Sell|2001|p=122}}

===Bilirubin lamps===
Deep blue light generated from a [[europium]]-activated phosphor is used in the [[light therapy]] treatment of [[jaundice]]; light of this color penetrates skin and helps in the breakup of excess [[bilirubin]].{{sfn|Kane|Sell|2001|p=122}}

===Germicidal lamp===
[[Germicidal lamp]]s contain no phosphor at all, making them mercury vapor gas discharge lamps rather than fluorescent. Their tubes are made of [[fused quartz]] transparent to the UVC light emitted by the mercury discharge. The 254&nbsp;nm UVC emitted by these tubes will kill germs and the 184.45&nbsp;nm far UV will ionize [[oxygen]] to [[ozone]]. Lamps labeled OF block the 184.45&nbsp;nm far UV and do not produce significant ozone.  In addition the UVC can cause eye and skin damage. They are sometimes used by [[geologist]]s to identify certain species of [[mineral]]s by the color of their fluorescence when fitted with filters that pass the short-wave UV and block visible light produced by the mercury discharge. They are also used in some [[EPROM]] erasers. Germicidal lamps have designations beginning with G, for example G30T8 for a 30-watt, {{convert|1|in|cm|adj=on}} diameter, {{convert|36|in|cm|adj=on}} long germicidal lamp (as opposed to an F30T8, which would be the fluorescent lamp of the same size and rating).

===Electrodeless lamp===
{{Main|Electrodeless lamp}}
Electrodeless induction lamps are fluorescent lamps without internal electrodes. They have been commercially available since 1990. A current is induced into the gas column using [[electromagnetic induction]]. Because the electrodes are usually the life-limiting element of fluorescent lamps, such electrodeless lamps can have a very long service life, although they also have a higher purchase price.

===Cold-cathode fluorescent lamp===
Cold-cathode fluorescent lamps were used as [[backlighting]] for [[LCD]]s in [[computer monitor]]s and televisions before the use of [[LED-backlit LCD]]s. They were also popular with computer [[case modder]]s.