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  2. Why Minus 40 Is A Magical Number In Weather - AOL

    www.aol.com/news/why-minus-40-magical-number...

    But there's one number in meteorology that lines up exactly between Fahrenheit and Celsius: minus 40 degrees! ... While temperatures in the Lower 48 won't get quite that cold, a few states in the ...

  3. Celsius - Wikipedia

    en.wikipedia.org/wiki/Celsius

    Anders Celsius's original thermometer used a reversed scale, with 100 as the freezing point and 0 as the boiling point of water.. In 1742, Swedish astronomer Anders Celsius (1701–1744) created a temperature scale that was the reverse of the scale now known as "Celsius": 0 represented the boiling point of water, while 100 represented the freezing point of water. [5]

  4. Freezing air temperature - Wikipedia

    en.wikipedia.org/wiki/Freezing_air_temperature

    Freezing [1] or frost occurs when the air temperature falls below the freezing point of water (0 °C, 32 °F, 273 K).This is usually measured at the height of 1.2 metres above the ground surface.

  5. List of cooling baths - Wikipedia

    en.wikipedia.org/wiki/List_of_cooling_baths

    -40 1 to 0.8 ratio of salt to ice. Dry ice: Acetonitrile-41 Dry ice: Pyridine-42 Dry ice: Cyclohexanone-46 Dry ice: m-Xylene-47 Dry ice: Diethyl carbitol-52 Dry ice: n-Octane-56 Dry ice: Diisopropyl ether-60 Dry ice: Chloroform-61 Liquid N 2: Chloroform-63 [2] Dry ice: Ethanol-72 Note: without the addition of ethylene glycol, temp is -78 °C ...

  6. How cold is too cold? Here's what makes the bitter cold so ...

    www.aol.com/cold-too-cold-heres-makes-172135009.html

    According to NWS, frostbite happens when the body's survival mechanisms kick in during extremely cold weather. In order to protect vital inner organs, the body will cut circulation to extremities ...

  7. Scale of temperature - Wikipedia

    en.wikipedia.org/wiki/Scale_of_temperature

    The degree Celsius (°C) can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval (a difference between two temperatures). From 1744 until 1954, 0 °C was defined as the freezing point of water and 100 °C was defined as the boiling point of water, both at a pressure of one standard atmosphere.

  8. The inauguration is moving indoors. Here's what to know about ...

    lite.aol.com/sports/motorracing/story/0001/...

    How cold is it going to get on Monday? The National Weather Service is predicting that the temperature will be about 22 degrees Fahrenheit (minus-6 Celsius) at noon EST, when Trump becomes president. That would be the coldest since Reagan’s second inauguration saw temperatures plunge to 7 degrees (minus-14 Celsius).

  9. Cold spell in Finland and Sweden sends temperature below minus 40

    www.aol.com/news/finland-sweden-set-winters-cold...

    Finland and Sweden recorded their coldest temperatures of the winter Tuesday when thermometers plummeted as low as minus 40 degrees Celsius (minus 40 Fahrenheit) as a cold spell grips the Nordic ...