Temperature ? Fantasy that people 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 within their environment purely subjectively. If we are too warm or too cold, this is a feeling, which may be different from person to person ? because not everyone gets cold at exactly 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 weather forecast with friends, acquaintances or colleagues.
Temperature
With the term temperature (from the Greek ?thermis? = warm), a specific thermal state of a body is described. Heat is a measure of the power of a body, which is generated by the random motion of its atoms or molecules in the body?s interior. Here, the temperature is the magnitude of a state which establishes the energy content connected with other physical quantities (mass, heat capacity).
Temperature unit
The unit of temperature is the Kelvin. At Willpower of 0 K, all atoms or molecules inside a body are at rest ? all motion within the body is frozen. One describes this state as 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 problem could possibly 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 depending on temperature
temperature-dependent frequency fluctuations
changes in the wavelength of the radiation of a body, depending on temperature
Note
Information on our temperature measuring instruments are available on the WIKA Website.