Little Johnny was approached by the lifeguard at the public swimming pool.
"You're not allowed to pee in the pool," said the lifeguard. "I'm going to report you."
"But everyone pees in the pool," insisted Little Johnny.
"That may be," said the lifeguard, "but not from the diving board!"
Sun-powered car and PoweramaIn 1955, the first solar-powered car was publicly demonstrated. It was a 15-inch Sunmobile built by William G. Cobb of the General Motors Corporation. Light energy falling on 12 selenium photoelectric cells created electric current to power a tiny electric motor that turned a driveshaft connected to the car's rear axle by a pulley. It was one of 253 free exhibits of the General Motors Powerama, Chicago, Ill. seen by over 2,500,000 visitors during this 28-day, $7,000,000 event spread over 1,000,000 sq ft on the shore of Lake Michigan. It showcased the company's modern diesel power, including an oil well, cotton gins, cranes, earth-movers, trucks, tractors, military equipment, a submarine, a shrimp boat, Aerotrain, an aluminium foundry and other machinery.«[Image: the lightweight Aerotrain was displayed at Powerama.] |
