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.
He discovered that the application of heat to food in sealed glass bottles preserved the food from spoilage. In 1800, Napoleon offered an award of 12,000 francs to anyone who could devise a practical method for food preservation for armies on the march. Appert won the award. Appert had found a new and successful method to preserve foods, but he did not fully understand it.