Temperature ? a term that people use almost daily as a matter needless to say, 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 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 mind-set ? is discussed 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 ? pressure gauge ออก หลัง ? = 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 within the body?s interior. Here, the temperature may be the magnitude of a state which establishes the power content connected 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 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 in 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 based on the temperature
temperature-dependent frequency fluctuations
changes in the wavelength of rays of a body, based on the temperature
Note
Home elevators our temperature measuring instruments can be found on the WIKA Website.