Quote of the day
Optimism is essential to achievement and it is also the foundation of courage and true progress.
Felix Ehrenhaft

Born: April 24, 1879
Died: March 4, 1952 (aged 72)
Bio: Felix Ehrenhaft was an Austrian physicist who contributed to atomic physics, to the measurement of electrical charges and to the optical properties of metal colloids. He was known for his maverick and controversial style.