Sony researchers have developed a refrigerator that only opens when you smile.
9
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Energy is being wasted if a toaster is left plugged in after use.
21
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
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