explain the working of sun dial and water clock what was disadvantage of using them for measuring time which development could overcome the disadvantage of ancient devices for measuring time expain this
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sundial, the earliest type of timekeeping device, which indicates the time of day by the position of the shadow of some object exposed to the sun’s rays. As the day progresses, the sun moves across the sky, causing the shadow of the object to move and indicating the passage of time.The first device for indicating the time of day was probably the gnomon, dating from about 3500 BCE. It consisted of a vertical stick or pillar, and the length of the shadow it cast gave an indication of the time of day. By the 8th century BCE more-precise devices were in use. The earliest known sundial still preserved is an Egyptian shadow clock of green schist dating at least from this period. The shadow clock consists of a straight base with a raised crosspiece at one end. The base, on which is inscribed a scale of six time divisions, is placed in an east-west direction with the crosspiece at the east end in the morning and at the west end in the afternoon. The shadow of the crosspiece on this base indicates the time. Clocks of this kind were still in use in modern times in parts of Egypt.
Sundial is one of the most ancient instruments for measuring time is sundials.
Sundials measures time based on the position and the length of the shadow caste by the sun as the time pass is the Shadow of The Blade on the dial changes with the changing position of the Sun
water clock sounds like a complex instrument it is not so water clock was a method used to measure time in the ancient Egypt in a water lock is two vessels are kept at different levels 1 above the other and the rate of dripping of water from the upper vessel to the lower vessel is observed to measure the time intervals the sloping sides of the upper wessels marks the rate of the rating of water constant from the bottom hole of the corny cell V cell the markings on the upper Western indicated the passage of time