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Taking Measure

Just a Standard Blog

pair of feet standing on either side of the prime meridian in Greenwich, England

Everyday Time and Atomic Time: Part 4

Judah Levine
This is part 4 in a series. Read part 1 , part 2 and part 3 . Greenwich Mean Time In the previous essay I introduced mean solar time, which averaged the annual variation in apparent solar time so as
wood pendulum clock hung on a wood paneled wall

Everyday Time and Atomic Time: Part 3

Judah Levine
This is part 3 in a series. Read part 1 and part 2 . Oscillators and Clocks In the previous essay, I introduced the ideas that frequency and time interval are closely related concepts, and that the
pipe organ

Everyday Time and Atomic Time: Part 2

Judah Levine
This is part 2 in a series. Read part 1. A short history of frequency Frequency was originally considered to be the province of musicians. The pitches or frequencies of the notes in a musical scale
NIST physicist Judah Levine with the NIST time scale, a digital clock face reading 14:33:34 and a bank of atomic clocks.

Everyday Time and Atomic Time: Part 1

Judah Levine
As a physicist in the National Institute of Standards and Technology (NIST) Time and Frequency Division, I have worked in the general area of operating atomic clocks and using output signals from them

About this blog

Taking Measure is the official blog of the National Institute of Standards and Technology (NIST).

It provides a behind-the-scenes look at NIST’s research and programs, covering a broad range of science and technology areas. Through this blog, NIST’s researchers and staff share why they do what they do and how today’s research will lead to tomorrow’s innovations.

The views presented here are those of the author and do not necessarily represent the views or policies of NIST.

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