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A woman and a man stand in front of scientific equipment, including a large green tank.
Gillian Nave (left) and Jacob Ward
Credit: R. Wilson/NIST

STEM is STELLAR! In November 2019, NIST’s Gillian Nave and Jacob Ward brought celebrations of Mercury’s transit (the point where Mercury passes between the Earth and the Sun) to around 400 Quince Orchard High School students and curious members of the local community.

First, a little background on the team behind the telescopes: Gillian has been with NIST for 25 years, where she supports measurement data for NASA's Hubble Space Telescope. For four years, Jacob worked at NIST via our Summer Undergraduate Research Fellowship (SURF). Now, he is a guest research assistant while completing his graduate education at the University of Maryland College of Computer, Mathematical, and Natural Sciences.

So what do they do exactly? When a research telescope sets its lens on a star or planet, we can use the reference data that Gillian and Jacob gather to determine how hot it is, how far away it is, how old it is and what the elements are that make it up. Essentially, their research helps astronomers map out the chemical history of the universe. Cool, right?

Gillian and Jacob say they find STEM outreach so rewarding because it is an opportunity to foster the next generation of game changers, some who might never have pursued a career in science because they didn’t realize how interesting it could be.

The high-school event was a perfect example. It took a little nudging before some of the students would agree to look, but once they peered through the telescopes, they quickly discovered an astronomical interest. That ended up being the tone of the day: a surprise that this science could be so interesting, coming from kids who might have never been exposed to it otherwise.

To anyone reading now who is finding an unsuspected interest in the inner workings of the celestial beyond, Gillian and Jacob encourage you to reach out to a local astronomy club. Per Gillian, “nothing might happen if you don’t try.”

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Constants, Units, and Uncertainty (CODATA)

Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The values are determined by a least-squares adjustment, based on all the available theoretical and experimental information. The selection and assessment of data is done under the auspices of the CODATA Task Group on Fundamental Constants.

There will be an adjustment of the constants to provide the values for a revision of the International System of Units (SI) expected to take place in 2018.

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2p x-ray absorption spectroscopy of 3d transition metal systems

Eric L. Shirley, John Vinson, Frank de Groot, Hebatalla Elnaggar, Federica Frati, Ru-pan Wang, Mario Delgado, Michel van Veenendaal, Maurits Haverkort, Robert Green, Yaroslav Kvashnin, Atsushi Hariki, Harry Ramanantoanina, Claude Daul, Bernard Delley, Michael Odelius, Marcus Lundberg, Oliver Kuhn, Sergey Bokarev, Keith Gilmore, Mauro Stener, Giovanni Fronzoni, Piero Decleva, Peter Kruger, Marius Retegan, Javier Fernandez-Rodriguez, Gerritt van der Laan, Yves Joly, Christian Vorwerk, Claudia Draxl, John Rehr, Arata Tanaka, Hidekazu Ikeno
A variety of methods are presented that are presently used to treat x-ray absorption spectra of transition-metal 2p edges in a wide range of compounds


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2015 French Award

The Judson C. French Award, first presented in 2000, is granted for significant improvement in products delivered directly to industry

2009 APS Fellow - Yuri Ralchenko

For significant contributions to the relativistic theory of highly-charged ions and collisional-radiative modeling, and through creation of