Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
The first alarm clock could only ring at 4 a.m.
120
All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
2
Kleenex tissues were originally used as filters in gas masks.
46
Any modern jet is capable of breaking the sound barrier.
34
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308