Williams, Brian, 1943-

Measuring time / by Brian Williams. - Mankato, MN : Smart Apple Media, 2002. - 32 p. : col. ill. ; 27 cm. - About time . - Williams, Brian, 1943- About time. .

Includes index.

Explores how humans have measured time throughout history, from moon calendars to sun clocks, hourglasses and other mechanical devices to electric, electronic, and atomic timepieces.

ISBN: 158340208X (alk. paper)

LCCN: 2002023115

Subjects--Topical Terms:
Time measurements.
Clocks and watches--History.

LC Class. No.: QB209.5 / .W53 2002

Dewey Class. No.: 529.7