Quote of the day
Optimism is essential to achievement and it is also the foundation of courage and true progress.
Charles Wheatstone
Born: February 6, 1802
Died: October 19, 1875 (aged 73)
Bio: Sir Charles Wheatstone FRS, was an English scientist and inventor of many scientific breakthroughs of the Victorian era, including the English concertina, the stereoscope, and the Playfair cipher.