The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Originally, Nintendo was a playing card manufacturer.
70
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Any modern jet is capable of breaking the sound barrier.
34
Originally, BMW was an airplane engine manufacturer.
69
Castor oil is used as a lubricant in jet planes.
-5
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144