Editing Electrometer (section)

=== Bohnenberger electrometer ===
The Bohnenberger electrometer, developed by [[Johann Gottlieb Friedrich von Bohnenberger|J. G. F. von Bohnenberger]] from an invention by T. G. B. Behrens,<ref name=EB1911/> consists of a single gold leaf suspended vertically between the anode and cathode of a [[Zamboni pile|dry pile]]. Any charge imparted to the gold leaf causes it to move toward one or the other pole; thus, the sign of the charge as well as its approximate magnitude may be gauged.<ref name="Angell1877">{{cite book|author=John Angell|title=Elements of magnetism and electricity: with practical instructions for the performance of experiments, and the construction of cheap apparatus|url=https://books.google.com/books?id=y45PAAAAYAAJ&pg=PA169|access-date=26 May 2013|year=1877|publisher=W. Collins, Sons, & Co.|pages=169–}}</ref>