Wolf, Johann Rudolf (1816-93)

Details Wolf, Johann Rudolf (1816-93) Wolf, Johann Rudolf (1816-93)

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke4102.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 4102. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astronomy

History And Archaeoastronomy, Biographies

Scientific paper

Born in Fällanden (near Zurich), Switzerland, became professor of astronomy at the University of Bern and director of the Bern Observatory, then professor of astronomy in Zürich where he founded an observatory. He devised a system now known as Wolf's sunspot numbers used to quantify solar activity by counting sunspots and sunspot groups and used it to confirm the sunspot cycle discovered by HEINR...

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