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When noise is the signal

机译：当噪声是信号时

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Most physicists probably learned about the laws of thermodynamics at high school, but few of us will have been told the whole story. Although these laws are extremely good at describing thermal phenomena, such as how a cup of coffee cools, they are too abstract to explain these processes. This is particularly relevant for temperature-one of the most important, yet conceptually most difficult, variables in thermodynamics. The basis of temperature and thermometry is the zeroth law of thermodynamics, which states that temperature is the quantity that takes the same value in two systems that are in thermal equilibrium. But how does this help us to actually measure it?
机译：大多数物理学家可能在中学时就已经了解了热力学定律，但是我们当中很少有人会被告知整个故事。尽管这些定律非常擅长描述热现象，例如一杯咖啡的冷却方式，但它们太抽象了，无法解释这些过程。这与温度特别相关-温度是热力学中最重要但概念上最困难的变量之一。温度和测温的基础是热力学的零定律，该定律指出温度是在两个处于热平衡状态的系统中取相同值的量。但是，这如何帮助我们进行实际测量呢？

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