Question

what is the lower and upper fixed points in laboratory thermometer

Answer 1

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To define a temperature scale, we first choose two reference temperatures called the fixed points. ... The lower fixed point, or ice point, is the temperature of pure melting ice at normal atmospheric pressure. The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure.

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Answer 2

Answer:

Explanation:

we first choose two reference temperatures called the fixed points. ... The lower fixed point, or ice point, is the temperature of pure melting ice at normal atmospheric pressure. The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure.