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How Long Is a Second? Science of Time and the History of Keeping It Knowledge Cards Quiz Deck
How Long Is a Second Science of Time and the History of Keeping It Knowledge Cards Quiz Deck
Author: Pomegranate
Clocks connect us to our universe. From the upright stick whose shadow traced the hours to the pendulums that imitated Galileo s swaying chandelier, the tools used early on to slice up the day measured the motion of Earth. More recently the task of measuring time has been assigned to atoms: the newest generation of atomic clocks is accurate to w...  more »
ISBN-13: 9780764948572
ISBN-10: 0764948571
Publication Date: 1/1/2009
Pages: 48
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Publisher: Pomegranate
Book Type: Paperback
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