Question

. What are upper and lower fixed points?

Answer 1

Answer:

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. Once we have two fixed points, we can define a temperature scale.

Explanation:

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Answer 2

Answer:

The lower fixed point is the temperature of pure melting ice at normal atmospheric pressure.

The upper fixed point is the temperature of boiling water at normal atmospheric pressure.

Both the fixed points can be used to explain different neans of temperature etc.

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