The first way people became aware of measuring time was by observing how an object 's shadow moves as the day progresses. Twenty-seven centuries ago, the Egyptians applied this principle by developing the sundial.
The next invention was the early Greeks' clepsydra, or water clock, a jar from which water dripped at a steady and measurable rate. In 140 BC, an Aexandrian inventor added a cog wheel and toothed rod to the clepsydra.
Very early on, the concept of an hourglass, in which sand essentially replaced dripping water, was formulated.
The modern clock with a face and moving hands was developed in the 13th to 14th centuries. Such a clock was affixed to Westminster Abbey in 1208, and about that time to Canterbury Cathedral as well. In 1326, a clock with astronomical devices was installed at St. Albans Cathedral.
Pocket -sized clocks -- or watches -- were developed in the early 16the century. By Elizabeth I's time, all wealthy people carried watches as a fashion statement.
The next invention was the early Greeks' clepsydra, or water clock, a jar from which water dripped at a steady and measurable rate. In 140 BC, an Aexandrian inventor added a cog wheel and toothed rod to the clepsydra.
Very early on, the concept of an hourglass, in which sand essentially replaced dripping water, was formulated.
The modern clock with a face and moving hands was developed in the 13th to 14th centuries. Such a clock was affixed to Westminster Abbey in 1208, and about that time to Canterbury Cathedral as well. In 1326, a clock with astronomical devices was installed at St. Albans Cathedral.
Pocket -sized clocks -- or watches -- were developed in the early 16the century. By Elizabeth I's time, all wealthy people carried watches as a fashion statement.