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1656 BCE
inventer
Ancient Egyptian obelisks, constructed about 3,500 B.C., are also among the earliest shadow clocks. The oldest known sundial is from Egypt it dates back to around 1,500 B.C. Sundials have their origin in shadow clocks, which were the first devices used for measuring the parts of a day. -
Period: 1656 BCE to 2018 BCE
Who Invented a Clock
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Greek water clock
An early prototype of the alarm clock was invented by the Greeks around 250 BC. The Greeks built a water clock, called a clepsydrae, where the rising waters would both keep time and eventually hit a mechanical bird that triggered an alarming whistle. -
Big Ben
In 1908, the Westclox Clock Company has issued a patent for the Big Ben alarm clock in London. The outstanding feature on this clock is the bell back, which completely envelops the inner case back and is an integral part of the case. The bell back provides a loud alarm. -
Battery- Powerd Clock
The Warren Clock Company was formed in 1912 and produced a new type of clock run by batteries, prior to that, clocks were either wound or run by weights. -
Quirtz Clock
In 1927, Canadian-born Warren Marrison, a telecommunications engineer, was searching for reliable frequency standards at Bell Telephone Laboratories. He developed the first quartz clock, a highly accurate clock based on the regular vibrations of a quartz crystal in an electrical circuit.
