Fahrenheit to Celsius temperature conversion merges in cold snap

Sunday, December 1st, 2013 By

temperature conversion

Fahrenheit to Celsius conversion became necessary in the 1960s after most of the world converted to Celsius as the U.S. stood pat. Image: CC Hugh Chevallier/Creative Commons

Fahrenheit to Celsius temperature conversion is required for the rest of the world to comprehend temperature in the U.S., unless the thermometer hits 40 below zero. At 40 below zero, the Fahrenheit and Celsius temperature scales converge for one brief degree. On Jan. 21 the temperature at International Falls, Minn., fell well below the Fahrenheit to Celsius temperature convergence to minus 46, or minus 43 Celsius.

Fahrenheit to Celsius: bitter cold just the same

Fahrenheit to Celsius temperature conversion tables and tools are readily available on the Internet. But sometimes it gets so cold that temperature becomes as relevant as a one-sided blowout in a football game. “The Nation’s Icebox” is the claim to fame for International Falls, which hit the lowest temperature there since people started keeping track in 1897. The National Weather Service issued wind chill warnings from Maine through parts of New York and Pennsylvania and into Michigan. Wind chill warnings are issued when the combination of wind and temperature on bare skin makes it feel like minus 25 degrees Fahrenheit (-32 Celsius).

How Fahrenheit created his scale

Fahrenheit to Celsius temperature conversion became necessary in the 1960s. Until then, Fahrenheit was the standard temperature scale for the English-speaking world and many other countries. The Fahrenheit scale was created by German physicist Daniel Gabriel Fahrenheit in 1724. In experiments he determined zero by placing a thermometer in chilled brine. By putting the thermometer in someones mouth, he determined 100 degrees. Other scientists noticed that the freezing point of 32 degrees and boiling point of water at 212 degrees were about 180 degrees apart. They tweaked the Fahrenheit scale to make the difference exactly 180 degrees, which made human body temperature 98.6 degrees Fahrenheit (37 Celsius).

Fahrenheit to Celsius conversion formula

The Celsius scale is named after a Swedish astronomer who created it in 1742. Celsius originally set the boiling point of water at 0 degrees and the freezing point at 100 degrees. By 1744 the Celsius scale was reversed to match temperature values with human perception. For most of the world today, water freezes at 0 degrees and boils at 100 degrees. A degree of Fahrenheit is equal to 5/9 of a degree Celsius. Before simply typing in the numbers on the Internet, Fahrenheit to Celsius temperature conversion required a mathematical formula: (F –  32) x 5/9 = C. for example, (98.6 F – 32) x 5/9 = 37 C.




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