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.
Werner von Siemens. Werner von Siemens invented âDynamoâ, âElectric Elevatorâ and âTrolleybusâ. Werner Von Siemens was a German inventor who made remarkable contributions to the fields of electronics and engineering. Born in Prussia (now a part of Germany) in 1816, he was the fourth of fourteen children. Without formally finishing high school, Siemens joined the Prussian Army to gain training in engineering which his father could not afford to give him.