### History

Born in Basel in 1678.

In 1695 he received his degree from Basel University after studying under Jakob Bernoulli.

Leibniz was able to secure a couple of posts for him, seemingly in return for Hermann being an early supporter of the Leibniz calaculus. In 1707, he was appointed as Professor of Mathematics at Padua University and in 1713 he went to Frankfurt-an-der-Oder.

In 1724, he went to Petersburg as Professor of Mathematics at the Academy, although appears to have soon grown home-sick. He tutored the future Peter II.

In 1731, he returned to Basel as Professor of Ethics and Natural Law.

1729 proclaimed the usefulness of polar coordinates. He gave transformations from rectangular to polar coordinates. Extended to modern form by Euler.

1732

is a surface of revolution about the z-axis