Castor oil is used as a lubricant in jet planes.
-5
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
It takes six months to build a Rolls Royce...and 13 hours to build a Toyota.
93
The cigarette lighter was invented before the match.
210
A toaster uses almost half as much energy as a full-sized oven.
33
