Mercury-in-glass thermometer
The mercury-in-glass or mercury thermometer is a thermometer that uses the thermal expansion and contraction of liquid mercury to indicate the temperature.
Mercury-in-glass thermometer for measurement of room temperature.
A large mercury in glass thermometer.
Closeup of a maximum thermometer. The break in the column of mercury is visible.
A medical mercury-in-glass maximum thermometer showing the temperature of 38.7 °C (101.7 °F).
A thermometer is a device that measures temperature or temperature gradient. A thermometer has two important elements: (1) a temperature sensor in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value. Thermometers are widely used in technology and industry to monitor processes, in meteorology, in medicine, and in scientific research.
Mercury thermometer (mercury-in-glass thermometer) for measurement of room temperature.
Fifty-degree thermometers from the mid-17th century on exhibit at the Museo Galileo with black dots representing single degrees and white represented 10-degree increments; used to measure atmospheric temperatures
A medical mercury-in-glass maximum thermometer.
An alcohol thermometer.
