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Fundamental Constants Are the Future of Measurement

Fundamental Constants Are the Future of Measurement
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Written by Adam J. Fleisher
Washington, DC - In an essay titled “The end of artefacts, ” Nobel laureate and National Institute of Standards and Technology (NIST) fellow William D. Phillips details how scientists came to realize the original vision of the metric system, or the International System of Units (SI) a system of units “for all times, for all people.” With the redefinition of the kilogram in 2019, the new SI was rightly celebrated as a unifying achievement toward the democratization of science, with NIST and its international partners having collectively led the charge. ....

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Fundamental Constants Are the Future of Measurement. Can They Replace Artifacts for Measuring Isotopes?

This artist s interpretation intends to show small grains of a reference material disappearing or floating away. Also shown are two lasers, red and blue, which represent the two different colored lasers used by our instrument. Also visible are linear molecules of carbon dioxide (collections of three balls), CO
2.
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Creative and Printing Services
In an essay titled “The end of artefacts, ” Nobel laureate and National Institute of Standards and Technology (NIST) fellow William D. Phillips details how scientists came to realize the original vision of the metric system, or the International System of Units (SI) a system of units “for all times, for all people.” With the redefinition of the kilogram in 2019, the new SI was rightly celebrated as a unifying achievement toward the democratization of science, with NIST and its international partners having collectively led the charge. ....

Baring Head , New Zealand General , New Zealand , United States , Pee Dee River , South Carolina , Williamd Phillips , Josepht Hodges , Haroldc Urey , Heinza Lowenstam , Abneesh Srivastava , Cook Strait Raukawa Moana , Ferdinand Brickwedde , Hongming Yi , National Institute Of Standards , International System Of Units , National Bureau Of Standards , Printing Services , National Institute , International System , Nature Physics , Brief History , Pee Dee Belemnite , Southern Oceanic Air , National Bureau , Composition Reveals Moments ,

A 'Forever' Stamp and a Discovery That Changed Physics Forever

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©2021 U.S. Postal Service. All rights reserved.
With a new “forever” stamp honoring First Lady of Physics Chien-Shiung Wu, we have come very close to seeing a National Institute of Standards and Technology (NIST) researcher on a U.S. postage stamp. Over the course of six months in 1956, Wu worked with researchers Ernest Ambler (who went on to become NIST director in the 1970s and ’80s), Raymond W. Hayward, Dale D. Hoppes and Ralph P. Hudson to carry out one of the most famous experiments in NIST’s history. Of course, NIST researchers have been up to many good things since then, but the Fall of Parity experiment carried out in collaboration with Wu still ranks high. The team’s findings, made in the quiet week after Christmas 1956, shattered a concept of nuclear physics that had been universally accepted for 30 years. ....

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