A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The electric chair was invented by a dentist!
122
The first alarm clock could only ring at 4 a.m.
120
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Castor oil is used as a lubricant in jet planes.
-5
The IRS processes more than 2 billion pieces of paper each year.
28
A small airplane can fly backwards.
75