Resonance

, Volume 16, Issue 1, pp 29–37 | Cite as

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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Suggested Reading

  1. [1]
    Denis Savoie, Sundials: Design, Construction and Use, Springer in association with Praxis Publishing, Chichester, UK. 2009.Google Scholar
  2. [2]
    Mark R Chartrand III, Amateur Astronomy — Pocket Skyguide, Newnes Books, Middlesex, England, 1984.Google Scholar
  3. [3]
  4. [4]
    Nick Strobel, Astronomywithout a Telescope, http://www.astronomynotes.com/

Copyright information

© Indian Academy of Sciences 2011

Authors and Affiliations

  1. 1.Department of PhysicsVishwa VidyapeethamKollamIndia

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