Robert Cornelius (1809-1893) was a lamp manufacturer from Philadelphia, USA. In the late 1830s, he started spending much of his free time messing around with photography.
The World’s deepest hole
In the early 1970s, the Soviet Union had quite an unusual project in the Pechensky District, approximately 1000 kilometers / 670 miles North of St. Petersburg. They wanted to find out more about the Earth and decided to start a borehole which was supposed to be 15 kilometers (9.3mi) deep.
The first computer programmer
Born in England as the daughter of the poet Lord Byron and the mathematician Annabella Milbanke, Ada Lovelace (1815-1852) was tutored in math and science from an early age.
The Hughes H-4 Hercules
During World War II, the American industrialist and aviation entrepreneur Howard Hughes (1905-1976) wanted to help the war effort. Out of this came the Hughes H-4 Hercules, one of the largest planes ever built.