On August22,1860, German engineer Paul Gottlieb Nipkow was born, who invented a predecessor of today's television http://yovisto.blogspot.de/2014/08/paul-nipkow-and-picture-scanning.html
On July 10, 1856, Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist Nikola Tesla was born. He is probably best known for his contributions to the design of the modern alternating current (AC) electricity supply system.
On December 2, 1942, during the Manhatten Project, a team led by Italian born physicist Enrico Fermi initiated the first self-sustaining nuclear chain reaction in the Chicago Pile-1 (CP-1), the world's first human-made nuclear reactor, and initiated the so-called atomic age. CP-1 was built on a rackets court, under the abandoned west stands of the original Alonzo Stagg Field stadium, at the University of Chicago.