Resonance

, Volume 16, Issue 1, pp 29–37

Sundials: Ancestors of our clocks

General / Article
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Abstract

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.

Keywords

Sundial celestial sphere equation of time time zones daylight saving time 

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Copyright information

© Indian Academy of Sciences 2011

Authors and Affiliations

  1. 1.Department of PhysicsVishwa VidyapeethamKollamIndia

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