Temperature ? a term that we use almost 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 have been too warm or too cold, it is just a feeling, which might be different from individual to individual ? because not everyone gets cold at exactly the same speed. The word temperature ? or, better, the condition, that influences (among other activities) our state of mind ? is chatted about daily when we are discussing the expected temperature from the elements 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, which 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 may be the Kelvin. At a temperature of 0 K, all atoms or molecules within a body are in rest ? all motion within the body is frozen. One describes this state because the absolute zero point. Lazy 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.
Reduced are directly influenced by the temperature and thus are employed 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, according to the temperature
Note
Info on our temperature measuring instruments are available on the WIKA Website.