Temperature ? a term that people 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 within their environment purely subjectively. If we are too warm or too cold, it is just a feeling, which might be different from person to person ? because not everyone gets cold at the same speed. The word temperature ? or, better, the condition, that influences (among other things) our mind-set ? is chatted about daily whenever 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 within the body?s interior. Here, the temperature is the magnitude of a state which establishes the power content connected 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 ? pressure gauge octa within 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 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, depending on the temperature
Note
Info on our temperature measuring instruments are available on the WIKA Website.