Temperature ? a term that we use daily as a matter of course, without being made aware of the physical correlations. But how may be Uplifting 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 problem, that influences (among other things) our state of mind ? is chatted about daily when 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 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 in the body?s interior. Here, the temperature is the magnitude of circumstances which establishes the energy content connected 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 inside a body are in rest ? all motion in the body is frozen. One describes this state as 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 therefore are employed for temperature measurement, such as, for example:
the dependence of expansion on temperature
the change in electrical resistance with temperature
voltage generation with respect to the temperature
temperature-dependent frequency fluctuations
changes in the wavelength of rays of a body, depending on the temperature
Note
Information on our temperature measuring instruments are available on the WIKA Website.g