On Time

From Seasons to Split Seconds

By Skurzynski, Gloria

Publishers Summary:
Discusses the astronomical causes of seasons, years, months and days, and how people through history have devised increasingly accurate calendars and clocks to keep track of time. 7 yrs+

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ISBN
978-0-79227-503-9
Publisher
Washington, D.C. : National Geographic Society, 2000.


REVIEWS

School Library Journal

Reviewed on July 1, 2000

Gr 4-7 This attractive offering is brimming with information about time and timekeeping, from seasons, years, and time zones to pendulums, hourglasses, and femtoseconds. The conversational tone helps readers get through the more difficult concepts, such as looking backward into deep time and deep space. Readers get a historical glimpse at the Tower of Winds, a laborious water clock built in Greece...Log In or Sign Up to Read More

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