SCIENCE
Skurzynski, Gloria

On Time: From Seasons to Split Seconds

(3) 4-6 Skurzynski presents an engaging account of the history of keeping track of time. Beginning with natural rhythms and patterns (sun and moon cycles, seasons) and progressing through human-constructed divisions, the book focuses on the technological and theoretical advances that prompted new conventions for timekeeping, even tackling relativity. Color photographs and illustrations are helpful and well integrated. Ind.

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