Centrifugal thermometer

from Wikipedia, the free encyclopedia
Centrifugal thermometer

A special alcohol or mercury thermometer for measuring the air temperature outdoors is called a centrifugal thermometer . It is moved in a circle on a string for a few seconds at head height.

The improved ventilation due to the high circular speed

By skilfully "spinning" the temperature can be measured with an accuracy of 0.2 ° C, which is 2 to 5 times more precise than with a well- hung thermometer.

Frequent applications are in astronomy and geodesy for measuring or controlling the temperature field or refraction , in laboratory technology and physics , as well as for the approximate calibration of inaccurate measuring devices such as cheap weather stations , room thermometers or simple bimetal strips, for example on outdoor thermometers .

See also: thermostat , Assmann psychrometer , measuring system