.

Leonhard Paul Euler (15 April 1707 – 18 September 1783) was a pioneering Swiss mathematician and physicist who spent most of his life in Russia and Germany.

In 1739 he wrote the *Tentamen novae theoriae musicae*, hoping to eventually incorporate musical theory as part of mathematics. This part of his work, however, did not receive wide attention and was once described as **too mathematical for musicians** and **too musical for mathematicians**.

— Wikipedia

.

.

.

2009.08.26 Wednesday