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Why alcohol is added in thermometer?

Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (-94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.
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3 comments

Thomas John
@latestupdatedtricks
Swan goose
amazing
Abba Zulyadaini Yahuza
How can you measure the lowest temperature using the ethanol filled thermometer without the glass been broken