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.
There are dedicated, enthusiastic people in this world who have made a cause (and hobby) out of saying, “I heard that.” NIST is keenly aware. We’re talking
Fruits and vegetables brought in from outside the country first require health and foodborne pathogen inspections. NIST research chemist Ileana Pazos helps the
Researchers at the National Institute of Standards and Technology (NIST) have designed and built an optical device that could set a new standard for measuring
NIST is in its eighth decade of providing critically evaluated, comprehensive databases of cross-section information for ionizing photons (x and gamma rays)
This project develops methods for very accurate measurements of thermal noise and provides support for such measurements in the communications and electronics
U.S. manufacturers have contended for decades that traceability to national standards for industrial irradiation applications is best achieved by services based
The NIST Laser Power and Energy Calibration Project develops and maintains the U.S. national standards for the characterization of laser power and energy
After a five-year renovation of the National Institute of Standards and Technology (NIST) Boulder, CO, antenna measurement facility, the Antenna On-Axis Gain
This is the report of a hybrid working group meeting held on April 25, 2023, at the National Institute of Standards and Technology (NIST) in Boulder, CO. The
Stephen E. Russek, Katy Keenan, Karl Stupic, Nikki Rentz, Michael Boss, Kevin J. Coakley, Amanda Koepke, Cassandra Stoffer
This document describes a calibration service to measure the water diffusion coefficient, or diffusivity, in reference materials and tissue mimics using nuclear
In recent work, we proposed sweeping the antennas of phased arrays and beamforming in postprocessing – what we coined switched beamforming – instead of sweeping
The largest of 6 NIST deadweight force generation machines, the 4.45 MN Deadweight Force Generating Machine can apply 20 equal force increments of 222 kN (or
The basic SIRCUS calibration setup is shown at the right. The output from a tunable laser is sent through an intensity stabilizer, then through a 'speckle
Aluminum oxide (Al 2O 3) photodiodes are issued by NIST as transfer standard detectors in the extreme ultraviolet spectral region (5 nm to 125 nm). Each device