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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. ....
Once More Into the Breach: Physicists Mobilize Again to Counter the Nuclear Threat armscontrol.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from armscontrol.org Daily Mail and Mail on Sunday newspapers.
IMAGE: Penn State The Warner Prize is awarded annually for a significant contribution to observational or theoretical astronomy during the five years preceding the award. It is given to an astronomer resident in North America who has not attained 36 years of age in the year designated for the award or must be within eight years of receipt of their doctorate. This is Dawson’s second AAS prize; she also received the Annie Jump Cannon Award in 2017 for her earlier work modeling the dynamical interactions of exoplanets in multiplanet systems. “I’m not surprised to see Bekki Dawson honored with another Society prize,” said AAS President Paula Szkody from the University of Washington. “She’s been a rising star in our field since her graduate student days.” ....