News and Updates

Displaying 1 - 19 of 19

A person in a black shirt works on a mechanical device in a lab setting.

NIST Brings Mass Measurement to the Masses

June 12, 2024

NIST has delivered a portable and highly accurate instrument for measuring mass to the U.S. Army, marking the first time in the U.S. that this technology is

Mass Revolution: Kibble Balances for All

March 28, 2023

NIST is working on a big project in a small package. When you want to weigh something – anything – in the United States, whether it’s a truck full of cargo or a

Artifacts, Begone! NIST Improves Its Flagship Device for Measuring Mass

January 18, 2023

In a brightly lit subterranean lab at the National Institute of Standards and Technology (NIST) sits a room-sized electromechanical machine called the NIST-4

NIST Researchers Link Cutting-Edge Gravity Research to Safer Operation of Construction Cranes

February 17, 2022

In the beginning, all that Stephan Schlamminger wanted to do was to write down an equation that would help him obtain a more precise value for G, the

Sneezes, Rain Clouds and Ink Jets: NIST Improves the Ability of Optical Microscopes to Measure the Volume of Microdroplets

December 20, 2021

Sneezes, rain clouds, and ink jet printers: They all produce or contain liquid droplets so tiny it would take several billion of them to fill a liter bottle

Measuring Up: NIST Calibrates Masses for Unique Air Force Deadweight Machines

November 18, 2021

Mechanical engineers at the National Institute of Standards and Technology (NIST) have just finished calibrating several dozen large metal masses, which will be

Opposite sides of a quartz crystal resonator

Universe in the Balance

February 12, 2020

Researchers at the National Institute of Standards and Technology (NIST) have found a way to link measurements made by a device integral to microchip

White Cat Hair on Black Pants: International Study Measures Stability of Precision Masses to Benefit Trade

November 26, 2018

When are two nominally identical kilogram masses no longer identical? When each goes to a different place and adsorbs varying amounts of moisture and

Comparison of Future Realizations of the Kilogram - Final Report

March 15, 2018

The Pilot Study — read 2016 article details — was completed in late 2016 and the Final Report was published on the BIPM website (PDF) in June of 2017. The main

Close up shot of the NIST Kibble balance with two kilograms stacked on it

New Measurement Will Help Redefine International Unit of Mass

June 30, 2017

Using a state-of-the-art device for measuring mass, researchers at the National Institute of Standards and Technology (NIST) have made their most precise

Man standing behind big silver equipment

Disseminating the New Kilogram: An International ‘Dry Run’

November 28, 2016

When the kilogram, the world’s basic unit of mass, gets a new definition in 2018, it will be based not on a physical artifact but a constant of nature. However

Fill 'er Up: NIST Develops Prototype Meter Test for Hydrogen Refueling Stations

July 21, 2014

To support the fair sale of gaseous hydrogen as a vehicle fuel, researchers at the National Institute of Standards and Technology (NIST) have developed a

New NIST Nanoscale Indenter Takes Novel Approach to Measuring Surface Properties

July 23, 2013

Researchers from the National Institute of Standards and Technology (NIST) and the University of North Carolina have demonstrated a new design for an instrument

Redefining the SI Base Units

November 2, 2011

Note: Much more recent information is available about redefinition of the SI units. For a comprehensive general overview, see How to Weigh Everything from

'Sí' on the New SI: NIST Backs Proposal for a Revamped System of Measurement Units

October 26, 2010

Taking the first steps of what would be a major historical advance in the science of measurement, the National Institute of Standards and Technology (NIST) is

A quantum-mechanics-based simulation demonstrates how a new NIST instrument can delicately pull a chain of atoms apart.

NIST Researchers Holding Steady in an Atomic-Scale Tug-of-War

March 30, 2010

How hard do you have to pull on a single atom of--let's say--gold to detach it from the end of a chain of like atoms?* It's a measure of the astonishing

New Enhancements Upgrade NIST Mass Spectra Library

December 22, 2005

After three years of development, the National Institute of Standards and Technology (NIST) has released a major upgrade of the widely used NIST/EPA/NIH Mass

Physicist Richard Steiner adjusts the electronic kilogram, an experimental apparatus for defining mass in terms of the basic properties of nature.

NIST Improves Accuracy of 'Watt Balance' Method for Defining the Kilogram

September 13, 2005

GAITHERSBURG, MD—A leading experimental method for defining the kilogram in terms of properties of nature is now more accurate than ever, scientists at the

Replace Kilogram Artifact Now With Definition Based on Nature, Experts Say

February 14, 2005

London, Feb. 14, 2005—It's time to replace the 115-year-old kilogram artifact as the world's official standard for mass, even though experiments generally

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