U.S. flag

An official website of the United States government

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.

Physical Measurement Laboratory

News and Updates

Displaying 101 - 125 of 1479
CTIM

Measuring Sunlight from Space, on a Chip

For 40 years, people have used space-based sensors to measure the amount of light coming from the Sun, which gives scientists insight into climate change on
bragg grating

Hooked on Photonics? Math to the Rescue

Photonic thermometers – which measure temperature using light – have been around in optical fiber form for decades. These devices, called fiber Bragg gratings
Dr. Michael Nelson

OWM Welcomes New Detailee, Mike Nelson

Mike joins OWM with a wealth of standards development experience and expertise in metrology he has gained during a NIST career that began in 2010. Initially a
artifact

Back to the Future: Gear Edition

As mechanical objects, gears have been around for so long that people may take them for granted. But gears are sophisticated parts that play a vital role in