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Keeping Time Through the Ages: The History of Tools Used to Measure Time (Powermath) - Softcover

Levy, Janey

 
9780823989171: Keeping Time Through the Ages: The History of Tools Used to Measure Time (Powermath)

Inhaltsangabe

This trip through history examines how time has been measured, by such methods as observation of natural cycles and different kinds of clocks and watches. Includes illustrations and descriptions of various time keeping devices such as obelisks, sun dials, sand clocks, candle clocks, and incense clocks.

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