Mention the types of cocks based on the
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Answers
Answer:
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Explanation:
In Ancient time there was water clock, candle clocks, sand clocks, sundial, candle clock and incense clocks used to measure time. At present time we use digital clock, mechanical clock, electrical clocks.
Clocks have different ways of displaying the time. Analog clocks indicate time with a traditional clock face, with moving hands. Digital clocks display a numeric representation of time. ... For the blind and use over telephones, speaking clocks state the time audibly in words.
Sundial:
The sundial has a stick or object to cast a shadow on the horizontal surface. As
the sun moves across the sky, the position of the shadow moves on the dial face to indicate time. The least count of such sundials again varied a great deal and improved from about one hour to about 15 minutes in the later years.
Water Clock:
It was an evenly marked container with a float and pointer into which water dripped in at a fixed rate. As the water dripped into the container, the level of water increased.The time was read off on the level markings on the wall of the container. Since the rate of flow of water depended on the level of water in the upper container it was improved to provide a constant rate of flow.The least count of such instruments varied a great deal but people were happy to have a least count of about a quarter of an hour.
Sand Clock:
It was made up of two rounded glass bulbs connected by a narrow neck of glass, between them. When the hourglass is turned upside down, a measured amount of sand particles stream through from the top bulb to the bottom bulb of the glass. These were more like timers which measured one hour typically and were therefore also called hourglass and had to be inverted every hour. They can also be built to measure smaller units of time for special purposes.
Atomic clock:
Atomic clocks are the most accurate time keepers ever known. The best ones lose or gain 1 second in 109 days(approximately 2739726 years). This means that once synchronized, for generations your family members need not reset the clock. Therefore, these clocks are used as primary standards for international time. Atomic clocks can be made to look like any other clock with a least count of one second or with a least count of one millisecond for scientific purposes.
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Explanation:
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