Time and Frequency Book Announcement
M Lombardi
It’s perhaps not directly related to the work of HamSCI, but I’m happy to announce the publication of my book – As Time Goes By: A Comprehensive Guide to Time and Frequency Measurements. I had planned and imagined this book for years, but didn’t start writing it until after my retirement from the Time and Frequency division of the National Institute of Standards and Technology (NIST) in 2023. My motivation for writing a book after retirement was to try and give back some of what was given to me, by sharing what I’d learned during my four decades at NIST.
The 568 pages of Time Goes By are divided into the five parts and 18 chapters listed below, and they cover all aspects of time and frequency metrology. Each chapter is accompanied by an extensive list of references.
PART I – Clocks and Oscillators
Chapter 1 – Shadow, Flow, and Mechanical Clocks
Chapter 2 – Quartz Clocks
Chapter 3 – Atomic Clocks
PART II – Measurements
Chapter 4 – Time Measurements
Chapter 5 – Frequency Measurements
Chapter 6 – Accuracy
Chapter 7 – Stability
Chapter 8 – Uncertainty
Chapter 9 – Traceability
PART III – Time Signals
Chapter 10 – Clocks Controlled by Radio Time Signals
Chapter 11 – Clocks Controlled by Network Time Signals
Chapter 12 – Clocks Controlled by Satellite Navigation Systems
PART IV – Research Areas
Chapter 13 - Optical Clocks
Chapter 14 – Optical Time Transfer
PART V – Applications
Chapter 15 – Time and Navigation
Chapter 16 – Time and Telecommunications
Chapter 17 – Time and Electricity
Chapter 18 - Time and Money
At least several of the chapters can serve as valuable references for the work being done by HamSCI. For example, Chapter 5 provides a detailed discussion of frequency measurements, Chapter 10 extensively covers time signal stations including WWV/H and WWVB, and Chapter 12 extensively covers GPS and other satellite systems. Many of the other chapters should also be of interest, because the book often focuses on the close relationship between radio communications and frequency metrology.
As Time Goes By is available in both hardcover and eBook formats. It’s being published by Jenny Stanford Publishing and distributed through Routledge (Taylor & Francis), Amazon, Barnes & Noble, and other retailers. Please see the links below for more information, and thank you for “taking the time” to read this post.
Amazon - https://www.amazon.com/Time-Goes-Comprehensive-Frequency-Measurements/dp/9815352288
Barnes & Noble - https://www.barnesandnoble.com/w/as-time-goes-by-michael-lombardi/1150426989?ean=9789815352283
73,
Mike Lombardi, K0WWX
Kristina Collins
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Dr. Nathaniel A. Frissell Ph.D.
Congratulations, Mike! This is fantastic!
73 de Nathaniel W2NAF
From: 'Kristina Collins' via HamSCI <ham...@googlegroups.com>
Sent: Tuesday, September 8, 2026 11:34 PM
To: ham...@googlegroups.com
Subject: Re: [HamSCI] Time and Frequency Book Announcement
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