In what order were the freezing and boiling points on his original scale?
Freezing at 0, boiling at 100
Freezing at 100, boiling at 0
Both at 0
Both at 100
Answer
Celsius inverted his original scale in 1742 because it made more sense to have the freezing point of water at 0° and the boiling point at 100°.
Celebrating Celsius: Test your knowledge about the influential Swedish astronomer and physicist!
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