Temperature ? a term that people use daily as a matter of course, without being made aware of the physical correlations. But how is the term temperature defined?
Happiness 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 the same speed. The word temperature ? or, better, the problem, that influences (among other activities) our state of mind ? is chatted about daily whenever Completeness 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 particular thermal state of a body is described. Heat is a measure of the energy of a body, that is generated by the random motion of its atoms or molecules in the body?s interior. Here, the temperature is the magnitude of a state which establishes the energy content associated with other physical quantities (mass, heat capacity).
Temperature unit
The unit of temperature is the Kelvin. At a temperature of 0 K, all atoms or molecules inside a body are at rest ? all motion in the body is frozen. One describes this state because 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 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 employed for temperature measurement, such as, for example:
the dependence of expansion on temperature
the change in electrical resistance with temperature
voltage generation depending on the temperature
temperature-dependent frequency fluctuations
changes in the wavelength of the radiation of a body, depending on the temperature
Note
Information on our temperature measuring instruments can be found on the WIKA Website.