A small airplane can fly backwards.
75
Attics were invented in Attica.
43
Castor oil is used as a lubricant in jet planes.
-5
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
