An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The electric chair was invented by a dentist!
122
All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
2
In 1998, Sony accidently sold 700,000 camcorders that had the technology to see through people's clothes.
88
The first alarm clock could only ring at 4 a.m.
120
A small airplane can fly backwards.
75
Whale oil was used in automobile transmissions as late as 1973.
56
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4