The ball on top of a flagpole is called a 'truck'.
24
Sony researchers have developed a refrigerator that only opens when you smile.
9
Kleenex tissues were originally used as filters in gas masks.
46
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
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
