Castor oil is used as a lubricant in jet planes.
-5
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
The average car produces a pound of pollution every 25 miles!
18
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The first alarm clock could only ring at 4 a.m.
120