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7 November, 15:56

Which device often is designed to have liquid enclosed in a glass tube?

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  1. 7 November, 16:58
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    Thermometers have liquids encased in a glass tube. In the past, liquid mercury was used. However, due to health concerns and environmental issues associated with mercury, many new thermometers use a red-dyed ethanol that will evaporate much more quickly and is much less toxic than mercury.
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