The first alarm clock could only ring at 4 a.m.
120
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Originally, BMW was an airplane engine manufacturer.
69
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
The cigarette lighter was invented before the match.
210