An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
There’s an internet-enabled jacket which gives you a “hug” every time a Facebook friend likes your status.
12
Energy is being wasted if a toaster is left plugged in after use.
21
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
The cigarette lighter was invented before the match.
210
