An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Whale oil was used in automobile transmissions as late as 1973.
56
Contrary to popular belief, putting sugar in a car's gas tank will NOT ruin its engine.
25
Energy is being wasted if a toaster is left plugged in after use.
21
Castor oil is used as a lubricant in jet planes.
-5
A toaster uses almost half as much energy as a full-sized oven.
33
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47