Mannheim is Germany's 21st-largest city with 317,000 inhabitants. Located at Rhine-Neckar confluence, forming 500,000-inhabitant urban zone. Known as "Square City" with grid-patterned streets. Home to University of Mannheim, Germany's leading business university
Born in Como in 1745, became professor of physics at Royal School in 1774. Married Teresa Peregrini in 1794, had three sons. Became professor of experimental physics at University of Pavia for 40 years
Benjamin Franklin (1706-1790) was a founding father who changed science. Thomas Edison (1847-1931) invented the light bulb and motion picture cameras. Lewis Latimer (1848-1928) invented the first commercially viable electric lamp
Born in 1856 during a lightning storm, Tesla showed early interest in engineering. Studied at Austrian Polytechnic in Graz but never completed degree due to gambling addiction
Wheel invented in Mesopotamia around 3500 BC. Compass developed by Chinese around 200 BC. First steam engine created by Thomas Savery in 1698. Concrete invented by Joseph Aspdin in 1824
Born in Edinburgh in 1847 to a family with hearing-impaired mother. Received early education from his mother despite her hearing loss. Studied at Edinburgh University and London Academy. Moved to Canada in 1870 due to tuberculosis epidemic