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Physical Measurement Laboratory

News and Updates

Displaying 101 - 125 of 1488
"The SI is not a static convention, but evolves following developments in the science of measurement" BIPM SI Brochure (9th Edition)

SI Prefix Progress

In December 2022, the BIPM SI Brochure (9 th Edition, December 2022, V2.01) was published to include the four new International System of Units (SI) prefixes
Otto Warnlof

Remembering Otto Warnlof

I was very sad to hear that Otto Warnlof, a longtime friend and former NIST colleague recently passed away at age 98. I have fond memories of working with Otto
Jodie Pope

Reliable Flow for Chip Makers

Researchers at the National Institute of Standards and Technology (NIST) have begun an ambitious project to attack a vexing problem in the semiconductor
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