By the sundial the solar term can be known too .

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Green lighthouse building shape is cylindrical so some people give it nicknamed sundial its facade shutter can be adjusted the light as the sun moves around the building rotates into the .

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Of course a sundial did not work at night or on cloudy days so men kept inventing other ways to keep track of time .

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Lay your shadows over the sundial .

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As a time-measuring apparatus the clepsydra is used more widely than the sundial .

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Under it are a cluster of buildings such as Ziwei Hall Sundial Shadow Hall and other auxiliary structures .

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The stationary arm whose shadow indicates the time on the sundial .

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Humans have used many devices to measure time . The sundial was one of the earliest and simplest .

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Or your favourite book beside the sundial .

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Unearthed relics show that the sundial was used before the Han Dynasty ( 206 BC - AD 220 ) . It had been popular until mechanical clocks were introduced to China .

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The hands are actually modeled after the shadow on a sundial .

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Figure Design of General Sundial Surface

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The invention and use of the gnomon-and-ruler sundial clepsydra and other time-measuring machines is evidence of Chinese wisdom .

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Moonlight was frosting the dew and an old sundial threw a long shadow .

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The structure reading set and observing methods of the instruments for time measuring and keeping such as gnomon sundial armillary sphere and clepsydra in Song dynasty have been analysed and their observation errors have been obtained .

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The sundial works well only when the sun is shining . So other ways were invented to measure the passing of time .

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This article gathers the function of description of time and space using shadows and points out the significance of sundial for opening out and using the order of nature .

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There he showed a great deal of interest in doing things with his hands : he made a model of a windmill he made water clocks and he made a stone sundial .

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The sundial is the oldest known device for the measurement of time .

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A sundial measures the movement of the sun across the sky each day .

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