Editing Jean-Baptiste Biot (section)

=== Electromagnetism ===
[[File:Biot - Essai de géométrie analytique, appliquée aux courbes et aux surfaces du second ordre, 1826 - 755044.tif |thumb|''Essai de géométrie analytique'', 1826]]
{{electromagnetism|Scientists}}
Jean-Baptiste Biot made many contributions to the scientific community in his lifetime – most notably in optics, magnetism, and astronomy. In 1804, he used lines of equal magnetic field intensity in an article authored together with the Prussian naturalist [[Alexander von Humboldt]].<ref>{{ cite book | last=Daum | first=Andreas W.|author-link=Andreas Daum | year=2024 | title=Alexander von Humboldt: A Concise Biography | location=Trans. Robert Savage. Princeton, N.J. | publisher=Princeton University Press |pages=106 | isbn=978-0-691-24736-6 }}</ref> The [[Biot–Savart law]] in magnetism is named after Biot and his colleague [[Félix Savart]] for their work in 1820.<ref>A joint Biot-Savart paper "Note sur le magnétisme de la pile de Volta" was published in the ''Annales de chemie et de physique'' in 1820.</ref> In their experiment they showed a connection between electricity and magnetism by "starting with a long vertical wire and a magnetic needle some horizontal distance apart [and showing] that running a current through the wire caused the needle to move" (Parsley).