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Glossar

absolute temperature
also thermodynamic temperature, temperature-value refer back to absolute zero
absolute zero
theoretical temperature at which entropy reaches its minimum value
Celsius
Celsius, Anders, 1701 - 1744, Swedish mathematician, physicist and astronomer
Fahrenheit
Fahrenheit, Daniel Gabriel, 1686 - 1736, German physicist
frostday
meteorological-climatological term of days with a minimum temperature lower then 0 °C
heat-index
calculate the felt air temperatur from ambient air temperature and humidity
hot day
obsolete: tropical day, meteorological-climatological term of days with a maximum temperature heigher or equal then 30 °C
ice-day
meteorological-climatological term of days with a maximum temperature lower then 0 °C
Kelvin
initial Thomson, William, 1824 - 1907, British physicist
Rankine
Rankine, William John Macquorn, 1820 - 1872, Scottish engineer and physicist
Réaumur
de Réaumur, René-Antoine Ferchault, 1683 - 1757, French natural scientist
Rømer
Rømer, Olaf Christensen, 1644 - 1710, Danish astronomer
SI unit
unit of the metric system, SI = système international d'unités
Strömer
Strömer, Mårten, 1707 - 1770, Swedish mathematician and astronomer
summer day
meteorological-climatological term of days with a maximum temperature heigher or equal then 25 °C
tropical day
obsololete meteorological-climatological term of days with a maximum temperature heigher or equal then 30 °C, today: hot day
tropical night
meteorological-climatological term of nights with a maximum temperature heigher or equal then 20 °C
windchill
is the felt air temperature on exposed skin due to wind
zero-point energy
the lowest possible energy that the particles of an object may have