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Mercury-in-glass thermometer for measurement of room temperature. The mercury-in-glass or mercury thermometer is a thermometer that uses the thermal expansion and contraction of liquid mercury to indicate the temperature.
Dec 18, 2023 · In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
A mercury thermometer is a device used in scientific and clinical settings to measure temperature. It consists of a mercury-filled bulb connected to a capillary with a temperature scale, and its sensitivity is determined by the bulb volume and the coefficient of thermal expansion.
The three fundamental components of a thermometer are a spirit or mercury-filled liquid that reacts to temperature changes, a glass tube to hold the liquid, and black ink to fill in the engraved scale marks with legible numbers. A sensitive thermometer is required to measure temperature.
A basic mercury thermometer is a precisely crafted piece of tube-shaped glass enveloping a mercury-filled reservoir connected to an extremely thin channel, called the capillary bore, that provides a chamber the mercury from the reservoir can expand into.
Apr 25, 2017 · Mercury has been frequently used in thermometers because it remains in liquid form throughout a wide range of temperatures: -37.89 degrees Fahrenheit to 674.06 degrees Fahrenheit. In a thermometer, a glass bulb attached to a glass capillary tube is filled with mercury.
Jan 11, 2023 · Once a staple in most medicine cabinets, mercury thermometers use mercury encased in glass to measure body temperature. Mercury thermometers are no longer recommended because they can break and allow mercury — which is toxic — to escape.
Jun 1, 2010 · Mercury thermometers have several intrinsic advantages: . stable for long periods . failure usually is visually apparent. minimal training or maintenance is required. However, mercury is a powerful neurotoxin, and the cost of cleaning a mercury spill in industry is several thousands of dollars.
Jun 13, 2022 · Not all liquid thermometers use mercury. If the line you see in your thermometer is red instead of silver, like the one in the picture here, your thermometer is filled with an alcohol-based liquid (such as ethanol). What's the difference? Mercury is toxic, although perfectly safe if it's sealed inside a thermometer.
When the mercury in a thermometer is warmed, it expands and moves up inside the tube, rising to a particular level. The outside of the thermometer is marked to show the temperature being measured. Temperatures can be checked with mercury thermometers in the mouth, rectum, or armpit.
