Quantum voltage noise source (QVNS). This device provides a fundamentally accurate voltage signal that can be compared to the voltage noise from elect

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Quantum voltage noise source (QVNS). This device provides a fundamentally accurate voltage signal that can be compared to the voltage noise from electrons in a resistor. Measuring the voltage noise enables researchers to determine the Boltzmann constant, which relates an energy of a system to its temperature. This research was carried out at the Physical Measurement Laboratory (PML) of the National Institute of Standards and Technology (NIST). Image published in 2017.

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Photo credit: © Dan Schmidt/NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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