Temperature ? What actually is it?

Temperature ? a term that we use almost daily as a matter needless to say, without being made aware of the physical correlations. But how may be the term temperature defined?
Everybody perceives temperature within their environment purely subjectively. If we are too warm or too cold, it is a feeling, which might be different from person to person ? because not everyone gets cold at the same speed. The term temperature ? or, better, the condition, that influences (among other activities) our state of mind ? is discussed daily whenever we are discussing the expected temperature from the elements forecast with friends, acquaintances or colleagues.
Temperature
With the word temperature (from the Greek ?thermis? = warm), a particular thermal state of a body is described. Heat is a measure of the power of a body, that is generated by the random motion of its atoms or molecules within the body?s interior. Here, the temperature may be the magnitude of a state which establishes the power content associated with other physical quantities (mass, heat capacity).
Accurate of temperature is the Kelvin. At a temperature of 0 K, all atoms or molecules inside a body are in rest ? all motion within the body is frozen. One describes this state as the absolute zero point. The Celsius temperature scale which is more common in our latitudes defines the zero point as the freezing point of water, since this problem could possibly be reproduced without great technical effort in past times.
Temperature measurement
Different physical properties are directly dependent on the temperature and thus are used for temperature measurement, such as for example, for example:
the dependence of expansion on temperature
the change in electrical resistance with temperature
voltage generation according to the temperature
temperature-dependent frequency fluctuations
changes in the wavelength of the radiation of a body, depending on the temperature
Note
Home elevators our temperature measuring instruments are available on the WIKA Website.

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