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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.
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.
Dec 15, 2020 · Oral temperature can be taken by either a digital or mercury thermometer. We’ll go over the benefits and drawbacks of mercury thermometers below.
Mercury-filled thermometers are instruments used to measure temperature through the expansion and contraction of the element mercury as it is heated or cooled.
The time-honored mercury thermometer is being phased out (because of environmental concerns), replaced by electronic thermometers with thermistors (oral, rectal, and axillary measurements) and infrared thermometers (tympanic or forehead measurements).
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.
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.
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.
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.
Dec 14, 2011 · The resources featured on this and connected pages can help users make intelligent and informed decisions about replacing Hg thermometers, acquiring the right kind of digital thermometer for a specific application, ensuring that the devices meet the latest standards, and disposing of mercury.
