Editing Galvanometer (section)

===Schweigger and Ampère===
The earliest galvanometer was reported by [[Johann Salomo Christoph Schweigger|Johann Schweigger]] at the [[University of Halle]] on 16 September 1820. [[André-Marie Ampère]] also contributed to its development. Early designs increased the effect of the magnetic field generated by the current by using multiple turns of wire. The instruments were at first called "multipliers" due to this common design feature.<ref>{{cite web|title=Schweigger Multiplier – 1820|url=https://nationalmaglab.org/education/magnet-academy/history-of-electricity-magnetism/museum/schweigger-multiplier|website=Maglab|publisher=National High Magnetic Field Laboratory|access-date=17 October 2017}}</ref> The term "galvanometer," in common use by 1836, was derived from the surname of Italian electricity researcher [[Luigi Galvani]], who in 1791 discovered that electric current would make a [[frog galvanoscope|dead frog's leg jerk]].