The first alarm clock could only ring at 4 a.m.
120
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
The electric chair was invented by a dentist!
122
The cigarette lighter was invented before the match.
210
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Whale oil was used in automobile transmissions as late as 1973.
56