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  2. Zero-curtain effect - Wikipedia

    en.wikipedia.org/wiki/Zero-Curtain_Effect

    The zero-curtain effect occurs in cold (particularly periglacial) environments where the phase transition of water to ice is slowed due to latent heat release. The effect is notably found in arctic and alpine permafrost sediments, and occurs where the air temperature falls below 0 ° C (the freezing point of water) followed by a rapid drop in ...

  3. Absolute zero - Wikipedia

    en.wikipedia.org/wiki/Absolute_zero

    The Fermi temperature is defined as this maximum energy divided by the Boltzmann constant, and is on the order of 80,000 K for typical electron densities found in metals. For temperatures significantly below the Fermi temperature, the electrons behave in almost the same way as at absolute zero.

  4. Negative temperature - Wikipedia

    en.wikipedia.org/wiki/Negative_temperature

    Negative temperatures can only exist in a system where there are a limited number of energy states (see below). As the temperature is increased on such a system, particles move into higher and higher energy states, so that the number of particles in the lower energy states and in the higher energy states approaches equality. [10] (This is a ...

  5. 'Warming up to 24 below zero:' Record cold surges across ...

    www.aol.com/warming-24-below-zero-record...

    With the frigid air mass's continued southward plunge, temperatures well below zero are forecast from Montana and the Dakotas to the Upper Midwest and sections of the central Plains, with minus ...

  6. Freeze warnings issued for millions with the coldest ...

    www.aol.com/news/coldest-air-months-way-millions...

    Temperatures will drop again on Wednesday for many areas outside the Midwest. Wednesday is likely to be the coolest day since spring for millions, and in many locations, it’ll feel more like ...

  7. Cold - Wikipedia

    en.wikipedia.org/wiki/Cold

    An iceberg, which is commonly associated with cold Signal "cold" – unofficial (except recommended by CMAS), it is nonetheless used by many schools of diving and propagated through diving websites as one of the more useful additional signals [1] Goose bumps, a common physiological response to cold, aiming to reduce the loss of body heat in a cold environment A photograph of the snow surface ...

  8. Temperatures could drop as low as 20 to 30 degrees below zero in the northern Plains both Friday and Saturday night and combine with gusty winds to make for frigid wind chills as low as 50 degrees ...

  9. Cold wave - Wikipedia

    en.wikipedia.org/wiki/Cold_wave

    A persistent wave of temperature extremes, including a cold wave, took place in Canada and the northeastern and central areas of the United States from Northern Canada to Mississippi, with temperatures in much of Canada of around −29 °C (−20 °F) and as low as −39 °C (−38 °F) in New York state, and as high as 21 °C (70 °F) and 31 ...