Temperature ? a term that we use almost daily as a matter of course, without being made alert to 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, it is a feeling, which might be different from person to person ? because not everyone gets cold at exactly the same speed. The term temperature ? or, better, the problem, that influences (among other activities) our state of mind ? is chatted about daily whenever we are discussing the expected temperature from the elements forecast with friends, acquaintances or colleagues.
Sadness
With the word temperature (from the Greek ?thermis? = warm), a particular thermal state of a body is described. Heat is 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 is the magnitude of circumstances which establishes the power content associated with other physical quantities (mass, heat capacity).
Temperature unit
The unit of temperature may be the Kelvin. At a temperature of 0 K, all atoms or molecules within a body are at rest ? all motion within 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 as 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 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 according 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.