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In 1742, Anders Celsius Was the First to Propose a Quantitative

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In 1742, Anders Celsius was the first to propose a quantitative method for measuring temperatures. He defined the temperature scale, which we call in his honour the Celsius scale: In 1742, Anders Celsius was the first to propose a quantitative method for measuring temperatures. He defined the temperature scale, which we call in his honour the Celsius scale:   in which T<sub>0</sub> is an arbitrary reference temperature, for example, the temperature at which the thermometer is filled with mercury. The term in the bracket is the fraction of the height change of the mercury column during a temperature change, and á<sub>Hg</sub> is the coefficient of linear expansion of mercury. What is the unit of á<sub>Hg</sub>? in which T0 is an arbitrary reference temperature, for example, the temperature at which the thermometer is filled with mercury. The term in the bracket is the fraction of the height change of the mercury column during a temperature change, and áHg is the coefficient of linear expansion of mercury. What is the unit of áHg?


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