An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
If a car is travelling at 55 miles per hour it will travel 56 feet before the driver can shift his foot from the accelerator to the brake.
25
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
Sony researchers have developed a refrigerator that only opens when you smile.
9
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7
Kleenex tissues were originally used as filters in gas masks.
46
Any modern jet is capable of breaking the sound barrier.
34