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The hypotenuse of this triangle is lined up to be parallel to the earth's axis of rotation, while there is a semicircular band (not shown) which is lined up with the earth's equator. The upshot, is that this instrument can be used to tell the time, by observing where the shadow of the hypotenuse falls on the band! |
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Sowmya, standing next to the sundial. Part of the band referred to above is to her left. |
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I don't really know what this is, but it looks cool. |
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Sowmya, walking down the sun dial. |