Editing Strobe light (section)

== Fechner color ==
Rapid flashing of a stroboscopic light can give the illusion that white light is tinged with color, known as [[Fechner color]]. Within certain ranges, the apparent color can be controlled by the frequency of the flash. Effective stimuli frequencies go from 3 Hz upwards, with optimal frequencies of about 4–6 Hz. The colours are an illusion generated in the mind of the observer and not a real color. The [[Benham's top]] demonstrates the effect.<ref>{{Cite web|last=Benham|first=CE|date=1894|title=The artificial spectrum top|url=https://scholar.google.com/scholar_lookup?hl=en&volume=51&publication_year=1894&pages=200&author=C+E+Benham&title=%E2%80%9CThe+artificial+spectrum+top%E2%80%9D|access-date=2021-07-31|website=scholar.google.com}}</ref><ref>Pilz J, Marre E (1993). "Pattern-induced flicker colors. An ophthalmologic examination method (Article in German)". ''Ophthalmologe''. '''90''' (2): 148–54. [[PMID (identifier)|PMID]] 8490297.</ref><ref>Schramme J (1992). "Changes in pattern induced flicker colors are mediated by the blue/yellow opponent process". ''Vision Research''. '''32''' (11): 2129–34. [[Doi (identifier)|doi]]:10.1016/0042-6989(92)90074-S. [[PMID (identifier)|PMID]] 1304090.</ref><ref>{{Cite book|last=. Krantz|first=John H|url=http://imbs.uci.edu/~kjameson/ECST/Krantz_FechnerColorsAndBehnamTop.pdf|title=Encyclopedia of Color Science and Technology|publisher=Springer Science+Business Media|year=2013|location=New York|doi=10.1007/978-3-642-27851-8_65-2}}</ref>