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What is red temperature line in a thermometre?

Updated: 8/20/2019
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โˆ™ 12y ago

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It's either Mercury or colored alcohol. They're used because they expand in warmer temperatures, and contract in cooler temperatures, resulting in the rising and falling of the red line in your thermometer.

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โˆ™ 12y ago
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Q: What is red temperature line in a thermometre?
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