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Fundamental Constants Are the Future of Measurement

Fundamental Constants Are the Future of Measurement Details 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.

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. Credit: 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.

A Forever Stamp and a Discovery That Changed Physics Forever

Credit: ©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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