An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
https://www.nist.gov/pml
Physical Measurement Laboratory
PML is a world leader in the science of measurement. We determine the definitive methods for nearly every kind of measurement employed in commerce and research, provide NIST-traceable calibrations, and disseminate standards and best practices throughout the nation. At the same time, PML works continuously at the outermost frontiers of metrology, devising tools and techniques to meet the ever-changing demands of American industry and science.
If you’re undergoing a missile attack and that missile is above the atmosphere, the best place to destroy it is while it’s still in space. To do that, you need
NIST OWM has just published the latest installment of its NIST Special Publication 2200 series on Legal Metrology , NIST SP 2200-03 An Evolving Regulatory
During the summer of 2023, the NIST Physical Measurement Laboratory’s ( PML ) Office of Weights and Measures ( OWM ) hosted four undergraduate students who were
Introduction If you are a state weights and measures official, scale manufacturer, or any other stakeholder dealing with scales used for commercial transactions
Researchers at JILA, a joint institute of the US National Institute of Standards and Technology (NIST) and the University of Colorado Boulder have developed new
Portable, low-field (1–100 mT) MRI systems that can safely perform scans outside a dedicated MRI suite could revolutionize the use of this diagnostic imaging
An effect that normally gets in the way of the magnetic trapping of atoms has been harnessed to create a new method for measuring pressure in ultrahigh vacuum
Nothing is truly nothing. A bit paradoxical, sure, but it’s true. Anything that we refer to as “empty,” “devoid,” or “containing nothing” does, in fact, contain
A mapping probe provides real-time signal sampling and recovery from engineered electromagnetic interference and includes: a trigger voltage source that synchronizes transmission of primary electromagnetic waves; primary electromagnetic wave synthesizers that receive a trigger voltage signal and
The present invention features a micrometer-scale torsion balance device comprising a rigid mass and two or more nanoribbons attached to the rigid mass. The rigid mass may be suspended by the two or more nanoribbons. The two or more nanoribbons may be placed under tensile stress. A local
A photonic bolometer includes: a photonic chip; a weak thermal link; a thermally-isolated member, and the weak thermal link thermally isolates the thermally-isolated member from the photonic chip; a photonic temperature sensor; a chip waveguide in optical communication with the photonic temperature
A photonic bolometer includes: a photonic chip; a weak thermal link; a thermally-isolated member, and the weak thermal link thermally isolates the thermally-isolated member from the photonic chip; a photonic temperature sensor; a chip waveguide in optical communication with the photonic temperature