Temperature ? a term that people use almost daily as a matter of course, without being made aware of the physical correlations. But how is the term temperature defined?
Everybody perceives temperature within their environment purely subjectively. If we have been too warm or too cold, it is a feeling, which may be different from person to person ? because not everyone gets cold at exactly the same speed. The term temperature ? or, better, Dreadful , that influences (among other activities) our state of mind ? is chatted about daily whenever we are discussing the expected temperature from the weather 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 really a measure of the power of a body, that is generated by the random motion of its atoms or molecules in the body?s interior. Here, the temperature may be the magnitude of circumstances which establishes the energy content associated with other physical quantities (mass, heat capacity).
Temperature unit
The machine of temperature is the Kelvin. At a temperature of 0 K, all atoms or molecules within a body are in rest ? all motion in the body is frozen. One describes this state because the absolute zero point. The Celsius temperature scale that is more common inside our latitudes defines the zero point because the freezing point of water, since this problem could be reproduced without great technical effort in past times.
Temperature measurement
Different physical properties are directly dependent on the temperature and therefore 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 with respect to the temperature
temperature-dependent frequency fluctuations
changes in the wavelength of rays of a body, depending on temperature
Note
Information on our temperature measuring instruments are available on the WIKA Website.