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Evolution of Clocks Timeline

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Monica Abouelsaad

on 17 November 2013

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Transcript of Evolution of Clocks Timeline

Evolution of Clocks Timeline
Created by:

How it works:
The sun dial worked by creating a shadow from the sun that was used to line up with a line written with a certain time of day. Sun dials were always made out of some type of hard material. It is often made of stone or rock.

Created By:

How it Works:
Candle clock works by having either a wax candle or a stick of incense starting at a certain height and melts to a lower height. This tells how long it has been since it has been lit by measuring its height. The candle clock method was not very efficient though. There are many different types of waxes and incenses, and they do not all melt at the same rate
Candle Clock
Created by:

How it works:
The weight clock was the first mechanical clock ever created. It involved having weights to use the force of gravity to help turn gears in the clock. They only had an hour hand that was used, and it would strike bells to help tell the time.
Weight Clock
Invented by:

How it works:
the hourglass involves an amount of fine sand pouring through a small hole constantly in a certain amount of time. The sand is contained in a glass jar like object in the shape of an eight. This was one of the most popular methods of telling time that did not involve any mechanical parts. It is easy to transport due to its size and how it contains the fine sand, unlike previous candles with dripping wax, spilling water, and heavy sun dials made of stone.

Created By:

How it works:
In a spring-driven clock you wind the spring and it unwinds turning gears
Spring Driven Clock
Created By:

How it works:
Mechanical clock that could display time and create a sound at every hour and a bird would come out from a window usually located at the top of the clock.
Cuckoo Clock
Pendulum Clock
Created By:
Warren A Marrison

How it Works:
It works by having a battery to send electric currents through a coil to cause a vibration. This vibration causes a magnet to change the frequencies so a small pin moves along a small quartz crystal to harness the extreme vibrations of the crystal into moving gears and other mechanical parts.
Quartz Clock
Created In:

How it Works:
Uses electromagnetic waves to track the time unlike the standard analog clock. It works by sending electromagnetic waves to cesium atoms. When they interact the atom vibrates, giving off a the same amount of vibrations for every second.
Hour Glass
Atomic Clock
Created By
: Persians

How it works:
The water clock is a type of device that involves water pouring into or out of a bowl through a small hole constantly. The time the water constantly travels is then measured to be put into time.
Water Clock
By: Monica Abouelsaad
Khadijah Reid

Created By:
Christiaan Hygens

How it Works:
It is a clock that is powered by a swinging pendulum to keep time
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