The cigarette lighter was invented before the match.
210
Sony researchers have developed a refrigerator that only opens when you smile.
9
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Castor oil is used as a lubricant in jet planes.
-5
The IRS processes more than 2 billion pieces of paper each year.
28
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144