A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
A toaster uses almost half as much energy as a full-sized oven.
33
The IRS processes more than 2 billion pieces of paper each year.
28
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
