HOW DID PEOPLE IN EARLY HOW DID PEOPLE IN EARLY CIVILISATIONS TELL THE TIMECIVILISATIONS TELL THE TIME

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Devices that early civilisations used to tell the

time

• Sundial

• Water Clock

• Candle Clocks

• Incense Clocks

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HOW DOES IT WORKHOW DOES IT WORK

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Candle Clock• A candle clock has

consistent spaced markings on it (or behind it). When it is burned the candle becomes lower and lower and where the top of the candle is at any given point tells the time, how many hours have passed or how long to go.

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Water Clock

• Works similar to a candle clock. A vessel is filled with water at the bottom of the vessel you cut avery small whole. On the vessel there must be markings which show how much time has passed, how long it has been or how long to go.

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Incense Clocks

• Incense clocks are sticks calibrated with known burning rates. The sticks are marked and at a set time a weight will drop onto a gong. The sound signifies a certain period of time has past. These clocks are believed to have originated in India but were practically first used in China. The clocks are usually in decorative trays.

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Sundial

• A sundial is like a shadow clock. The sun hits the tall structure in the middle of the clock which casts a shadow on to the dial. There are marking on the dial to tell what time it is. Where the shadow meets the sun is the point which shows the time.

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THANK YOU FOR WATCHING THANK YOU FOR WATCHING

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