Temperature ? a term that we 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 have been too warm or too cold, this can be a feeling, which may be different from person to person ? because Monetize gets cold at the same speed. The term temperature ? or, better, the condition, that influences (among other activities) our state of mind ? is chatted about daily whenever we are discussing the expected temperature from the weather forecast with friends, acquaintances or colleagues.
Temperature
With the word 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, which is generated by the random motion of its atoms or molecules within the body?s interior. Here, Divulge may be the magnitude of circumstances which establishes the energy 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 inside a body are at 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 inside our latitudes defines the zero point as 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 used for temperature measurement, such as, for example:
the dependence of expansion on temperature
the change in electrical resistance with temperature
voltage generation with regards to the temperature
temperature-dependent frequency fluctuations
changes in the wavelength of rays of a body, with respect to the temperature
Note
Info on our temperature measuring instruments can be found on the WIKA Website.