thermomètre à mercure

CONT: Les meilleurs thermomètres à liquide sont les thermomètres à mercure gradués sur tige. La graduation sur le support peut entraîner des erreurs importantes d'estimation.
OBS: Le mercure est un liquide qui se solidifie à -38,8 °C.

CONT: Air temperatures are usually measured with a mercury-in-glass thermometer. When the bulb is heated, mercury is forced further up the fine bore of the tube, and when the bulb is cooled the mercury retreats. There are now sophisticated electrical instruments for measuring temperature, but liquid-in-glass thermometers are still used for most meteorological observations.
CONT: Fahrenheit: The name of a Prussian physicist, inventor of the mercurial thermometer.