, Volume 16, Issue 1, pp 29–37

Sundials: Ancestors of our clocks


    • Department of PhysicsVishwa Vidyapeetham
General / Article

DOI: 10.1007/s12045-011-0005-4

Cite this article as:
Anoop, P.D. Reson (2011) 16: 29. doi:10.1007/s12045-011-0005-4


This article deals with the timekeepers of the past, the sundials. Apart from discussing the structure of a few common sundials, we point out the reasons for the variation between sundial time and the time shown by mechanical timekeepers.


Sundial celestial sphere equation of time time zones daylight saving time

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© Indian Academy of Sciences 2011