Short-term disability insurance, which is most often purchased as part of a group at work, can be paid by either the employer or the employee. Group short-term disability insurance policies are guaranteed issue, meaning you do not have to take a medical exam to buy coverage.
Otto von Guericke: Father of Vacuums. Otto von Guericke was a German scientist born in the town of Magdeburg, Germany. He is best remembered for founding the physics of vacuums. In 1650, Otto invented a vacuum pump that was designed to pull air out of whatever vessel to which it was connected. It contained a piston and an air-gun cylinder with one-way flap valves.
The Magdeburg hemispheres were designed by a German scientist and mayor of Magdeburg, Otto von Guericke, in 1656 to demonstrate the air pump that he had invented, and the concept of atmospheric pressure.he original Magdeburg hemispheres and Guericke's vacuum pump in the Deutsches Museum, Munich, Germany. The Magdeburg hemispheres, around 50 cm (20 inches) in diameter, were designed to demonstrate the vacuum pump that Guericke had invented.