What are some sources for further reading about clocks and timekeeping?
A NIST publication called, From Sundials to Atomic Clocks (ISBN 0-16-050010-9) is a good place to begin. This book was written for a general audience and provides a comprehensive, easy-to-understand introduction to the field of time and frequency. The book and other general interest time and frequency publications can be downloaded from the NIST Time and Frequency publication database.
