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 in their environment purely subjectively. If we are too warm or too cold, this is a feeling, which might be different from person to person ? because not everyone gets cold at exactly the same speed. The word temperature ? or, better, the condition, that influences (among other activities) our mind-set ? is chatted about 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 particular thermal state of a body is described. Heat is really 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 may be the magnitude of circumstances which establishes the power content associated with other physical quantities (mass, heat capacity).
Temperature unit
The machine of temperature is the Kelvin. At Glamorous 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 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 influenced by the temperature and therefore are employed for temperature measurement, such as, 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, with regards to the temperature
Note
Home elevators our temperature measuring instruments can be found on the WIKA Website.