Sensor Science Division Groups

Realizes and disseminates the SI unit of length from micrometers to kilometers. We develop, perform and deliver measurements, standards and infrastructural technology services that promote U.S. innovation and industrial competitiveness.

Develops models, standards, reference data, methods, and uncertainty analyses for metering liquid and gas flows, airspeed, liquid density, and volume. We measure micro-flows (e.g., pharmaceuticals) and mega-flows (e.g., natural gas in major pipelines, pollutants from power plants).

The Fundamental Thermodynamics Group realizes, maintains, and disseminates the national measurement standards for temperature, humidity, pressure, vacuum, and leaks.

Maintains, improves, and disseminates the Nation's photometric scales and radiometric scales from the extreme-ultraviolet (EUV) and visible to the far infrared.

The group establishes the detector-based scale for radiant power responsivity through cryogenic electrical substitution radiometry, and disseminates the scale to the remote sensing community via radiance and irradiance responsivity through the SIRCUS, hyperspectral imaging, and LBIR facilities. The

Develops and disseminates measurement methods and documentary and artifact standards for the characterization of the optical and topographical properties of surfaces, particularly surfaces and surface finishes important in optical instrumentation, forensics, and consumer products.