Relating to or measured by the Fahrenheit temperature scale, which freezes water at 32 degrees and boils it at 212 degrees.
Named after Daniel Gabriel Fahrenheit, an 18th-century Polish-born physicist who invented the mercury thermometer and created this temperature scale in 1724.
Fahrenheit chose the freezing point of saltwater (not fresh water!) as zero because it was the coldest temperature he could reliably create in his lab—and the weird numbers like 32°F for freezing water exist because he originally based his scale on different reference points!
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