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

Sensor Science Division

News and Updates

Displaying 126 - 150 of 175
Set of Grand Master Thread Gauges

Gauging the Needs of the Petroleum Industry

When he looked at the dramatic increase in his laboratory's thread gauge calibration income – a 50 % increase over last year and a 1000 % increase from 14 years
water sample

UV Ray of Hope for Safer Drinking Water

A group of researchers from PML's Sensor Science Division is part of a project that will have a direct effect on improved safety of the nation's drinking water
Bullet SRM

New SRM for Bullet Casings

At a time when the reliability of crime lab findings is under increasing scrutiny, PML researchers have provided law enforcement with an important new tool for
Peter Huang

New Point for Dew Point

Peter Huang of the Sensor Science Division's Temperature and Humidity group has devised a new humidity generator that enables dew-point measurements up to 98 °C
SURF beam line

Beaming Up on the Way to Space

Space may be the final frontier. But often a few trips to PML are necessary before things can get off the ground. One recent case in point is the test of an
Illustration showing the laser pulses being emitted, the pulses striking the greenhouse gases, and the backscattered photons returning.

Progress and Promise in DIAL LIDAR

For climatologists and environmental policy makers who need to determine the flux of greenhouse gases (GHG), there are three paramount questions: Where is it
Contamination forming on a clean multi-layer surface.

UV Lithography: Taking Extreme Measures

Sometime soon, microchip fabricators will take the next major step in the relentless reduction of feature size, from the current minimum of 22 nm down to 10 nm