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the clepsydra formed by inclined walls which hold water it slowly leek
to the bottom. -
The rod-like sundial has a scale with 5 incision horizontal bar, it has 5 daily hours (1, 2, 3, 4, 5) if you turn it to west it still has the 5 but you will have (7, 8,9, 10, 11) and if you turn it east you will have 6.
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On the hemispherical sundial there is 11 hours lines and 12 hours in the day, to shore the time is the shadow from vertical gnomon top.
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The ring bears there is a hole, and around it there is 12 equal parts which defines the 12 hours.
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In Ancient Greek they used there noes to tell time when it was the 6th cent. The days ware divided into 12 hours and the years ware divided into 12 parts.
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the alarm clock was used to wake up on time for things with out being late.
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It is a half of a concave hemisphere. It is vary clever that they puu a front base of the dial and the gnomon that use's the sun to make the shadow to point at the time.
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Two uneven horizontal gnomons that are placed on opposite sides. The hour lines are split up in equal sides.
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It is lighter then hemispheric sundial, and since it is cut in haft it is a lot more fragile then the other sundials.
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a net of 11 hour lines, and it defines 12 hours of the day with help of a spot from the sunlight that go's throw a tiny hole in the roof.
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we use these still to tell time and we need batters. but it is better then the digital clocks because when the power go's out the clock still on.
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For these kinds of clocks all we need to do is look at it and it will shore you the time, but the bad thing is that when the power go's out so dos the clock.
