The 1 cm squared microchip used for NIST’s Johnson Noise Thermometry work, fabricated at the Boulder, Colo., campus.
NIST has recently made substantial improvements to its Johnson-noise thermometry system, which is playing a vital role in the worldwide effort to determine the value of a key physical constant in time for the impending redefinition of the International System of Units (SI) in 2018. The system is now capable of yielding statistical uncertainties 10 times smaller than its
Two new advanced laboratory buildings for high-precision science and measurements have officially opened in Boulder, Colo., providing upgraded facilities to support technology innovation and economic growth as well as the training of future scientists.
Last weeks (20 October) meeting of the International Committee for Weights and Measures (CIPM) resulted in a resolution recommending the redefinition of four base units of the International System of Units (SI): the kilogram, the […]
PTBnews 2.2023 A method for calculating the simulation uncertainty of a virtual ultrasonic flowmeter has been developed in PTB’s VirtMet Competence Center. This method allows calibration factors relevant to fluid mechanics to be calculated for […]
