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  2. 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.

  3. 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. This is usually measured at the height of 1.2 metres above the ground surface.

  4. Scale of temperature - Wikipedia

    en.wikipedia.org/wiki/Scale_of_temperature

    This definition also precisely related the Celsius scale to the Kelvin scale, which defines the SI base unit of thermodynamic temperature with symbol K. Absolute zero, the lowest temperature possible, is defined as being exactly 0 K and −273.15 °C. Until 19 May 2019, the temperature of the triple point of water was defined as exactly 273.16 ...

  5. Ground frost - Wikipedia

    en.wikipedia.org/wiki/Ground_frost

    Since 1961 the statistics have referred to the number of days with grass minimum temperature below 0°C. Occasionally, the term ground frost can still be seen, but it means simply a minimum temperature below 0 °C. [2]

  6. Cold - Wikipedia

    en.wikipedia.org/wiki/Cold

    Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00 K on the Kelvin scale, an absolute thermodynamic temperature scale.

  7. Degree of frost - Wikipedia

    en.wikipedia.org/wiki/Degree_of_frost

    0 °C = 32 °F. A degree of frost is a non-standard unit of measure for air temperature meaning degrees below melting point (also known as "freezing point") of water (0 degrees Celsius or 32 degrees Fahrenheit). "Degree" in this case can refer to degree Celsius or degree Fahrenheit.

  8. Mount Washington's astonishing AccuWeather RealFeel ... - AOL

    www.aol.com/weather/100-degrees-below-zero-thats...

    A few hours later during the early morning hours of Feb. 4, as the temperature dipped further to 10 degrees below zero, this broke that date's record low of 2 degrees below zero from 1886.

  9. Humid continental climate - Wikipedia

    en.wikipedia.org/wiki/Humid_continental_climate

    The snowy city of Sapporo, Japan, has a humid continental climate (Köppen Dfa).. Using the Köppen climate classification, a climate is classified as humid continental when the temperature of the coldest month is below 0 °C [32.0 °F] or −3 °C [26.6 °F] and there must be at least four months whose mean temperatures are at or above 10 °C (50 °F). [5]