Thanks for posting that Sci-Am article, Jim.
-- Also online is the classic and very approachable book:
"From Sundials To Atomic Clocks: Understanding Time And Frequency"
by James Jespersen, Jane Fitz-Randolph (NBS Monograph 155)
https://nvlpubs.nist.gov/nistpubs/Legacy/MONO/nistmonograph155e1999.pdf
That's 1996 edition. The older 1977 edition, in color, and highly readable:
https://archive.org/details/FromSundialsToAtomicClocksUnderstandingTimeAndFrequency
-- I recommend either of the above two editions for anyone new to the
field of precise time & frequency. For something fresher try:
https://nvlpubs.nist.gov/nistpubs/jres/122/jres.122.029.pdf
which is a recent review of atomic clock history at NIST, with a nice
collection of photos ;-)
-- For deeper and more technical discussion of time & frequency topics
these two are good:
"Introduction to time and frequency metrology", by Judah Levine
https://tf.nist.gov/general/pdf/1288.pdf
"Fundamentals of Time and Frequency", by Michael Lombardi
https://tf.nist.gov/general/pdf/1498.pdf
Many of these are mentioned in the curated reading list:
https://www.nist.gov/pml/time-and-frequency-division/general-interest-tf-publications
/tvb
On 9/19/2021 12:14 PM, Lux, Jim wrote:
A nice article from the late 50s in Scientific American that describes
the various schemes for timekeeping (including zenith transit
detectors, etc.)
https://tf.nist.gov/general/pdf/1568.pdf
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