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  2. Negative temperature - Wikipedia

    en.wikipedia.org/wiki/Negative_temperature

    The possibility of negative temperatures was first predicted by Lars Onsager in 1949. [4] Onsager was investigating 2D vortices confined within a finite area, and realized that since their positions are not independent degrees of freedom from their momenta, the resulting phase space must also be bounded by the finite area.

  3. Absolute zero - Wikipedia

    en.wikipedia.org/wiki/Absolute_zero

    A system with a truly negative temperature is not colder than absolute zero. Rather, a system with a negative temperature is hotter than any system with a positive temperature, in the sense that if a negative-temperature system and a positive-temperature system come in contact, heat flows from the negative to the positive-temperature system. [11]

  4. Kelvin - Wikipedia

    en.wikipedia.org/wiki/Kelvin

    The difference of temperatures between the freezing- and boiling-points of water under standard atmospheric pressure shall be called 100 degrees. (The same increment as the Celsius scale) Thomson's best estimates at the time were that the temperature of freezing water was 273.7 K and the temperature of boiling water was 373.7 K. [ 33 ]

  5. Lowest temperature recorded on Earth - Wikipedia

    en.wikipedia.org/wiki/Lowest_temperature...

    The Low Temperature Laboratory recorded a record low temperature of 100 pK, or 1.0 × 10 −10 K in 1999. [11] The current apparatus for achieving low temperatures has two stages. The first uses a helium dilution refrigerator to get to temperatures of millikelvins, then the next stage uses adiabatic nuclear demagnetisation to reach picokelvins ...

  6. Temperature - Wikipedia

    en.wikipedia.org/wiki/Temperature

    On the empirical temperature scales that are not referenced to absolute zero, a negative temperature is one below the zero point of the scale used. For example, dry ice has a sublimation temperature of −78.5 °C which is equivalent to −109.3 °F. [97] On the absolute Kelvin scale this temperature is 194.6 K.

  7. Polar vortex to blast 30 states with life-threatening cold ...

    www.aol.com/polar-vortex-blast-us-life-115624040...

    Minneapolis had a high temperature of 34 degrees on Thursday, but on Sunday, ... "I mean, it will feel like negative 50 degrees in some spots across America come Monday morning."

  8. Wind chills 55 below; snow and ice in Florida: Extreme cold ...

    www.aol.com/bitter-cold-grips-much-us-133122205.html

    'Life-threatening' temps could reach 55 degrees below zero. Temperatures over the next few days are forecast to climb no higher than the negative teens and single digits in the Upper Midwest to ...

  9. 2 Degrees Will Change The World - The Huffington Post

    data.huffingtonpost.com/2015/11/two-degrees-will...

    The green, orange and yellow lines indicate how surface temperatures will likely respond if leading carbon emitters begin to reduce reliance on fossil fuels. Without immediate curbs, temperatures are set to follow the red track, and increase between 3.2 and 5.4 degrees Celsius by 2100. The green line shows how we can minimize warming if ...