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When noise becomes the signal

Submitted by wwwadm on

Nature Physics, Published online: 13 February 2025; doi:10.1038/s41567-024-02766-9

Even a child intuitively understands the cold of winter or the heat of a hot summer day. However, when it comes to a scientific definition of temperature, things get murky quickly. As Aaron Hui explains, measuring electrical noise is one way to measure temperature directly.