An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Castor oil is used as a lubricant in jet planes.
-5
Attics were invented in Attica.
43
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
The life boat was patented in 1845!
29