An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The life boat was patented in 1845!
29
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60


