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.
In 1650, Otto von Guericke invented the air pump, used to create a partial vacuum. Using hollow copper spheres and an air pump of his own construction, Guericke demonstrated that a partial vacuum could be created by pumping the air out of the sphere.
Otto von Guericke. Otto von Guericke (originally spelled Gericke, German: [ËÉ¡eËÊÉªkÉ]; November 20, 1602 â May 11, 1686 (Julian calendar); November 30, 1602 â May 21, 1686 (Gregorian calendar)) was a German scientist, inventor, and politician.