Editing Solar prominence (section)

==History==
The first detailed description of a solar prominence was in 14th-century [[Laurentian Codex]], describing the [[solar eclipse of May 1, 1185]]. They were described as "flame-like tongues of live embers".<ref>{{cite web |url= https://www2.hao.ucar.edu/Education/solar-physics-historical-timeline-0-1599#1185 |title= 1185: The first description of solar prominences |author= <!--Staff writer(s); no by-line.--> |date= 2008 |website= Solar Physics Historical Timeline (0–1599) |publisher= High Altitude Observatory }}</ref><ref name=Montreal>{{cite web |url= http://www.astro.umontreal.ca/~paulchar/grps/histoire/newsite/sp/great_moments_e.html |title= 1185: The first description of solar prominences |author= <!--Staff writer(s); no by-line.--> |date= 2008 |website= Great Moments in the History of Solar Physics |publisher= Université de Montréal |access-date= 30 March 2015 |archive-url=https://web.archive.org/web/20150402122706/http://thebookofbeginnings.com/sources/4/HistoryofSolarPhysics.pdf |archive-date=2 April 2015}}</ref><ref name="Newsletter">{{cite web |last1=Poitevin |first1=Patrick |last2=Edmonds |first2=Joanne |title=Solar Eclipse Newsletter |url=http://eclipse.gsfc.nasa.gov/SENL/SENL200305.pdf |access-date=30 March 2015 |volume=8 |number=5 |date=2003}}</ref>

Prominences were first photographed during the [[solar eclipse of July 18, 1860]], by [[Angelo Secchi]]. From these photographs, altitude, emissivity, and many other important parameters were able to be derived for the first time.<ref>{{cite book |last1=Secchi |first1=Angelo |title=Le Soleil, Part 1 |date=1870 |location=Paris |publisher=Gauthier-Villars |page=378| url=https://play.google.com/store/books/details?id=V-gRAAAAYAAJ&rdid=book-V-gRAAAAYAAJ&rdot=1}}</ref>

During the [[solar eclipse of August 18, 1868]], [[Optical spectrometer|spectroscopes]] were for the first time able to detect the presence of emission lines from prominences. The detection of a hydrogen line confirmed that prominences were gaseous in nature. [[Pierre Janssen]] was also able to detect an emission line corresponding to an at the time unknown element now known as [[helium]]. The following day, Janssen confirmed his measurements by recording the emission lines from the now unobstructed Sun, a task that had never been done before. Using his new techniques, astronomers were able to study prominences daily.<ref name=vial15>{{cite book |last1=Vial |first1=Jean-Claude |last2=Engvold |first2=Oddbjørn |title=Solar Prominences |date=2015 |publisher=Springer |isbn=978-3-319-10415-7}}</ref>