Tag: Timekeeping

An Introduction to Modern Timekeeping and Time Transfer


Free Download An Introduction to Modern Timekeeping and Time Transfer
English | 2023 | ISBN: 3031307798 | 518 Pages | PDF EPUB (True) | 93 MB
This book provides a comprehensive, systematic description of modern timekeeping and its specializations. Introductory chapters discuss the concept of time and its definition, then briefly look at pre-Atomic Era timekeeping to set the stage for the introduction of the atomic clock. Subsequent chapters focus on concepts such as frequency stability and measurement uncertainty, as well as computer network time-synchronization protocols including Network Time Protocol (NTP) and Precise Time Protocol (PTP). The book then delves into the nuts and bolts of the Global Navigation Satellite Systems (GNSS), Two-Way Satellite Time and Frequency Transfer, and Optical Time and Frequency Transfer. Timescale theory is then described as a way to combine clock data, and the algorithms and procedures used to generate Coordinated Universal Time (UTC) are given. Finally, there is a look at modern applications of timekeeping and time transfer.

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A Brief History of Timekeeping The Science of Marking Time, from Stonehenge to Atomic Clocks


Free Download A Brief History of Timekeeping: The Science of Marking Time, from Stonehenge to Atomic Clocks by Chad Orzel, Mike Lenz, HighBridge, a division of Recorded Books
English | 2022 | ISBN: B09QBQR53B | M4B@64 kbps | 12h 28m | 342 Mb
Predating written language and marching on through human history, the desire for ever-better timekeeping has spurred technological innovation and sparked theories that radically reshaped our understanding of the universe and our place in it.
Chad Orzel, a physicist and best-selling author, continues his tradition of demystifying thorny scientific concepts by using the clocks and calendars central to our everyday activities as a jumping-off point to explore the science underlying the ways we keep track of our time. Ancient solstice markers depend on the basic astrophysics of our solar system; mechanical clocks owe their development to Newtonian physics; and the ultra-precise atomic timekeeping that enables GPS hinges on the predictable oddities of quantum mechanics.

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