On July 23, 1985, Commodore revolutionized the home computer market by introducing the high end Commodore Amiga with a graphic power that was unheard of by that time.
Friedrich Bessel and the Distances of Stars http://ift.tt/1p6OPPs
On July 22, 1882, famous painter and printmaker Edward Hopper was born. http://yovisto.blogspot.de/2013/07/the-quiet-moments-of-edward-hopper.html
Jean Picard and his Love for Accuracy
On July 21, 1620, French astronomer, cartographer and hydraulic engineer Jean-Félix Picard was born. He is regarded as the founder of modern astronomy in France. He introduced new methods, improved the old instruments, and added new devices, such as Huygens’ pendulum clock to record times and time intervals.
On July 21, 1899, Ernest Hemingway was born http://yovisto.blogspot.de/2012/07/the-last-safari-phenomenon-ernest.html The Last Safari - The Phenomenon Ernest Hemingway
On July 21, in 1796, Scottish Africa explorer Mungo Park as first European advanced to the river Niger http://yovisto.blogspot.de/2013/09/mungo-park-and-waters-of-niger.html