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.
Frederick Griffith's Discovery of the Transforming Principle in Bacterial Organisms. Frederick Griffith was searching for a vaccine against Spanish flu and was using two strains of Streptococcus pneumoniae bacteria. During the process he discovered that gene transfer took place between two different bacterial strains. slide 1 of 4. Bacteria Microbiology Frederick Griffith's experiment showed that bacteria were capable of transferring their genetic information by a process that he called transformation. Frederick Griffith was an English army doctor and his experiment, which consisted of testing the effects of killed bacteria on live cells, was actually intended to help develop a vaccine against a future outbreak of Spanish flu, the pandemic that killed millions of people after world War I.