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Taking Measure

Just a Standard Blog

Time and frequency

Everyday Time and Atomic Time: Part 1

March 31, 2021

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

From 1901 to 2021: Measurements Then and Now

March 3, 2021

A lot has changed at the National Institute of Standards and Technology (NIST) in the past 120 years. For one thing, we were known as the National Bureau of

Keeping Time at NIST

June 23, 2020

Einstein is reported to have once said that time is what a clock measures. Some say that what we experience as time is really our experience of the phenomenon

Howard Yoon with the NIST standard of spectral irradiance, a bright light, well-calibrated light bulb..

Lighting the Way Toward Better Measurements

January 15, 2016

As a physicist who explores ways to measure light more accurately, it should come as no surprise that I’m fascinated by even common optical phenomena that we

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