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Physical Measurement Laboratory

Developing and delivering trusted measurements to support national needs.

ER-2 taking off
NIST Moonlight Data Will Help Satellites Get a More Accurate Look at Earth
diagram of a spherical retarding field analyzer
NIST Study Aims to Improve Utility of the Scanning Electron Microscope

News and Updates

Events

110th NCWM Annual Meeting

External Event

Sun, Jul 13 - Thu, Jul 17 2025
Registration : Open through July 17th, 2025 For more details, please contact: Elisa Stritt elisa.stritt [at] ncwm.com (elisa[dot]stritt[at]ncwm[dot]com) A Guide
Advanced Mass Thumbnail

2053 Advanced Mass Seminar

Mon, Jul 28 - Thu, Aug 7 2025
The 9-day, hands-on Advanced Mass calibration seminar focuses on the comprehension and application of the advanced mass

Awards

View All Awards

Press Coverage

Three male researchers pose smiling in front of a large, complex scientific device in a lab.

Get quantum-generated random number for free

EE News Europe
Researchers at ICFO in Barcelona, Spain, worked with spinout QuSide to developed a fast quantum random number generators that is being used the US National

Patents

Continuous-Wave Laser Source And Making A Continuous-Wave Laser Source

NIST Inventors
Scott Papp and Jennifer Black
A method of designing a continuous-wave laser source having a target output wavelength and an input laser with a wavelength different from the target output wavelength includes the steps of receiving the target output wavelength, and subordinate properties of the laser source; determining a

Sound Pressure Metrology Instrument And Determining Sound Pressure From Index Of Refraction

NIST Inventors
Richard A. Allen , Randall P Wagner , Benjamin Reschovsky and Akobuije Chijioke
A sound pressure metrology instrument determines sound pressure from index of refraction and includes: a light source that produces source light; the optical cavity that: receives an acoustic field from the sound source; receives the source light from the light source; produces acoustic-modified

Contacts

PML Director and Deputy Director

Associate Director for Measurement Services and Associate Director

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