An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Google founders Sergey Brin and Larry Page have expressed their desire to see the search engine become artificial intelligence itself. To achieve that goal, they created the highly-protected “X lab.”
-7
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
Castor oil is used as a lubricant in jet planes.
-5
Energy is being wasted if a toaster is left plugged in after use.
21
Kleenex tissues were originally used as filters in gas masks.
46