Sony researchers have developed a refrigerator that only opens when you smile.
9
The cigarette lighter was invented before the match.
210
Any modern jet is capable of breaking the sound barrier.
34
In the early 1960's, Porsche commercially manufactured farm tractors.
24
The first alarm clock could only ring at 4 a.m.
120
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184