Title: Water-clocks and time measurement in classical antiquity
Journal Title: Endeavour
Publication Date: 1979
Start Page: 32
End Page: 37
Published online: online 26 August 2004
Author: John G Landels, M.A., Ph.D.
Abstract: r-clock was the first mechanical device for time measurement to be used by the Greeks. Previously they had relied on sundials, or observation of the phases of the moon or the position of the sun in the zodiac to locate points of time within the day, month or year; and by the mid-fifth century BC they had made some progress with the difficult calendar problems due to the fact that the solar day, the lunar month, and the solar year are not commensurable with each other in whole numbers.
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