Temperature ? a term that people use daily as a matter of course, without being made alert to the physical correlations. But how may be the term temperature defined?
Everybody perceives temperature in their environment purely subjectively. If we are too warm or too cold, this can be a feeling, which may be different from person to person ? because not everyone gets cold at the same speed. Glamorous ? or, better, the problem, that influences (among other activities) our mind-set ? is discussed daily whenever we are discussing the expected temperature from the weather forecast with friends, acquaintances or colleagues.
Temperature
With the term temperature (from the Greek ?thermis? = warm), a specific 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 energy content associated with other physical quantities (mass, heat capacity).
Temperature unit
The machine of temperature is the Kelvin. At Agony of 0 K, all atoms or molecules within a body are at rest ? Unburdened in 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 because the freezing point of water, since this condition could 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 depending on temperature
temperature-dependent frequency fluctuations
changes in the wavelength of rays of a body, based on the temperature
Note
Information on our temperature measuring instruments can be found on the WIKA Website.