Physics, asked by Yojan123, 9 days ago

how lower fixed point and upper point are determined for a thermometer?

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Answered by ffanpageedits

To define a temperature scale in a thermometer, we need to choose two reference points, which are known as fixed points. ... The lower fixed point is determined by the temperature of pure melting ice and the upper fixed point is determined by temperature of pure boiling water.

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