1. He attended the University of Zurich where he studied under Raabe.

3. wrote on prime number theory and geometry, then later on probability and statistics - a long paper discussed Buffon's needle experiment. He estimated π by Monte Carlo methods

4. his main contribution, however, was his work on the 11 year sunspot cycle.

5. He also studied at Vienna and Berlin where he attended lectures by Encke, Dirichlet, Poggendorf, Steiner and Crelle. In 1838 he visited Gauss then the following year he became a teacher of mathematics and physics at the University of Bern. He became professor of astronomy there in 1844.

6. Johann Rudolf Wolf Born: 7 July 1816 in Fällanden (near Zurich), Switzerland Died: 6 Dec 1893 in Zurich, Switzerland