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When water does not boil at the boiling point.

¹Department of Science and Technology Studies, University College London, Gower Street, London WC1E 6BT, UK. h.chang@ucl.ac.uk

|March 6, 2007

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Pure water

Area of Science:

The historical and scientific exploration of thermometry and the physical properties of water.

Background:

The common understanding that pure water boils at 100°C at standard pressure is a simplification.
Historical scientific observations revealed significant variations in water's boiling point even under constant pressure.

Discussion:

This abstract delves into the historical scientific discourse surrounding the variability of water's boiling point.
It questions the pedagogical simplification of a constant boiling point for water.

Key Insights:

The boiling temperature of pure water is not a fixed constant as commonly taught.
Pioneering scientists in the late 18th century documented substantial deviations in water's boiling point.

Outlook:

Understanding the historical context is crucial for appreciating the complexities of scientific constants.

Related Experiment Videos

This historical perspective informs the accurate calibration of scientific instruments like thermometers.