The cigarette lighter was invented before the match.
210
More than a billion transistors are manufactured every second.
-25
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12


