"Otto von Guericke (/ˈɡɛərɪkə/ GAIR-ik-ə, also US: /ˈɡwɛər-, -ki/ GWAIR-, -⁠kee, German: [ˈʔɔto fɔn ˈɡeːʁɪkə]; spelled Gericke until 1666; November 20, 1602 – May 11, 1686 [Julian calendar]; November 30, 1602 – May 21, 1686 [Gregorian calendar]) was a German scientist, inventor, and politician. His major scientific achievements were the establishment of the physics of vacuums, the discovery of an experimental method for clearly demonstrating electrostatic repulsion, and his advocacy for the reality of "action at a distance" and of "absolute space"." - (en.wikipedia.org 05.11.2019)