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.
In 1883 Gottlieb Daimler, who had previously worked with Otto, designed a four stroke internal combustion engine that ran on petrol or gasoline. The engine ran faster than Ottos so that it produced more power for the weight of the engine.