Lester Wire was a police officer in Salt Lake City. Wire's job was to direct traffic near a busy intersection. There was a railroad near the intersection and the railroad crossing light gave him the idea for traffic lights.
The radio was thought up by a team of many people, but David Edward Hughes was given credit for it.
George John Seabury was a chemist born in 1844. When he came up with the first band-aid he was serving in the civil war and was wounded. As he lay in a hospital bed he cam up with the thought. He didn't patent his idea until the 20's.
The television wasn't created by just one person. It was credited to several people. Each person that was credited had a major breakthrough that contributed to the overall invention.
Before hair dryers were invented, people would use vacuum cleaners to dry their hair. Thanks to Alexander Goldefroy, however, we now don't have to use vacuums.
John Augustus Larson was credited with the invention of the polygraph.
While at the University of California, Herbert Evans accidentally discovered vitamin E in leafy green vegetables.
Clarence Birdseye II is the father of frozen foods.
Henry Ford is the father of all motor vehicles. He fathered the famous Ford motor company.
Alexander Flemming accidentally dropped some mold into a dish of bacteria. He noticed the bacteria near the mold died and dubbed the mold Penicillin.