Tag Archives: nearby compass needle

Today’s Birthday: HANS CHRISTIAN ØRSTED (1777)


Hans Christian Ørsted (1777)

Ørsted was a Danish physicist and chemist. In 1820, he discovered that electric current passing through a wire can deflect a nearby compass needle, a phenomenon that inspired the development of electromagnetic theory. His 1820 discovery of piperine, one of the pungent components of pepper, was an important contribution to chemistry. In 1824, he founded a society devoted to the spread of scientific knowledge among the general public. What unit of measurement was named after him? More… Discuss