Whale oil was used in automobile transmissions as late as 1973.
56
The ball on top of a flagpole is called a 'truck'.
24
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
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
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12