What object can tell you the approximate time of day using only the position of the sun and a cast shadow?
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What ancient object can tell you the approximate time of day using only the position of the sun and the shadow it casts, with no batteries or electricity at all?
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What ancient object can tell you the approximate time of day using only the position of the sun and the shadow it casts, with no batteries or electricity at all?
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A sundial. Its shadow moves predictably across marked hours as the sun travels across the sky.
