He had great help with his education, mostly from Johann Bernoulli, who was from Basel, Switzerland. Johann tutored Leonhard; he was able to draw off his learning from the University of Basel. At first, Johann was a student but then he became a professor, and stayed teaching at the school until his death. Leonhard then became a professor at the St.

Gustav Kirchhoff married Clara Richelot, daughter of his previous Math professor. The couple had 5 children, 3 boys and 2 girls. In 1869 Clara passed away, leaving Kirchhoff to care for the 5 children. This was hard for the widower as he had a disability that meant he needed aid walking with either crutches or a wheelchair. Luise Brömmel became his 2. When one thinks of the classic life of a research scientist and .

The golden ratio goes by many names; phi, the golden section, the golden mean, divine proportion, divine section, golden cut, and more. All these names portray the supreme, but why? What is it that places the number 1. Importance of 17th Century Mathematics.