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Gaithersburg

Kelvin: Thermodynamic Temperature

In everyday life, we usually think of temperature in terms of comparisons: How hot or cold something is relative to some physical property...

Kelvin: Present Realization

Realizing an SI unit — that is, converting its formal definition into concrete reality — requires following a specific set of methods and...

Kelvin: History

The kelvin is the fundamental unit of temperature. But it came at the end of a journey that began long before thermometers even existed. The...

Kelvin: Introduction

Temperature is one of the most important and ubiquitous measurements in human life. For centuries, we have continuously improved on the...

Publications

Journal Publications Marvel, Jeremy A., and Roger Bostelman. "Test Methods for the Evaluation of Manufacturing Mobile Manipulator...

SHIELDED SOLENOIDS

NAME EQUIPMENT BEAMLINE PERFORMANCE INSTRUMENT USED KRONOS 8" OD, 12" L Max 2\theta: 5.0\(^{\circ}\) Measurable Q range: 0.015 Å -1 - 0.12 Å...

Kilogram: The Future

Massive Change With the international metrology community providing all the required measurements for updating the SI, the kilogram — along...

Kilogram: The Kibble Balance

Named after its inventor, Bryan Kibble at the U.K.’s National Physical Laboratory (NPL), who conceptualized it in 1975, the Kibble balance...

Kilogram: The Present

Artifacts and Uncertainty Many units of measure have been defined in terms of artifacts. For example, until 1960 the international...

NSF DEVICES/EQUIPMENT

Neutron spin filter equipment is separated by type. Each has general parameters listed for user reference. Typically, the equipment chosen...

Kilogram: Focus on History

Who decides? On May 20, 1875, 17 different countries signed the Treaty of the Meter (also called the Meter Convention) to establish new...

Kilogram: The Past

For almost a century and a half, much of the world used a highly polished, golf ball-sized cylinder of a platinum alloy as the international...

INSTRUMENT PRESENTATION SLIDES

Neutron Spin Filters on CANDOR Neutron Spin Filters on MACS Neutron Spin Filters on MAGIK Neutron Spin Filters SANS Neutron Spin Filters on...

Digital Forensics

Digital evidence includes data on computers and mobile devices, including audio, video, and image files as well as software and hardware. Digital evidence can

SEOP METHOD

Spin Exchange Optical Pumping (SEOP) In the spin-exchange method (apparatus shown above), two steps are needed to polarize 3He by this...
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