Novel 'Noise Thermometry' May Help Redefine International Unit of Temperature

After seven years of work, researchers at the National Institute of Standards and Technology (NIST) have built a system that relies on the "noise" of jiggling electrons as a basis for measuring temperatures with extreme precision. The system is nearly precise enough now to help update some of the crucial underpinnings of science, including the 54-year-old definition of the Kelvin, the international unit of temperature.

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