Yesterday, we listed the seven basic methods scientists use to get rid of gravity. Today, we’d like to go in the opposite direction, and look at a tool used to introduce a high amount of gravity to a test subject: a centrifuge.
John Glenn is an American hero. He orbited the Earth at 17,526 mph and ain't scared of a damn thing—except, of course, the Johnsville human centrifuge. That "sadistic" machine terrified Glenn and his fellow astronauts for more than 50 years at the Naval Air Warfare Center in Pennsylvania. Here's how.