The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
Sony researchers have developed a refrigerator that only opens when you smile.
9
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
