Editing Fluorescence (section)

=== Fluorescence ===
[[File:US $20 under blacklight.jpg|thumb|Fluorescent security strip in a US twenty dollar bill under UV light]]
Strongly fluorescent pigments often have an unusual appearance which is often described colloquially as a "neon color" (originally "day-glo" in the late 1960s, early 1970s). This phenomenon was termed "Farbenglut" by [[Hermann von Helmholtz]] and "fluorence" by Ralph M. Evans. It is generally thought to be related to the high brightness of the color relative to what it would be as a component of white. Fluorescence shifts energy in the incident illumination from shorter wavelengths to longer (such as blue to yellow) and thus can make the fluorescent color appear brighter (more saturated) than it could possibly be by reflection alone.<ref>{{cite journal|last1=Schieber|first1=Frank|s2cid=2439728|title=Modeling the Appearance of Fluorescent Colors|journal=Proceedings of the Human Factors and Ergonomics Society Annual Meeting|date=October 2001|volume=45|issue=18|pages=1324–1327|doi=10.1177/154193120104501802}}</ref>