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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.
May 30, 2015 · Daniel Fahrenheit built several types of thermometers, but his Stuff of Genius wasn't restricted to a few temperature measuring devices. Tune in and learn how Daniel Fahrenheit invented the...
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.
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.
Oct 19, 2023 · The main reason mercury is used in thermometers is because it has a higher coefficient of expansion than water. This means that changes in its volume with temperature are more noticeable. Additionally, mercury has a boiling point of 356.7 degrees Celsius, which is much higher than alcohol’s boiling point of 78.37 degrees Celsius.
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.
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.
Oct 5, 2021 · Why Mercury is a Great Thermometer Filling. Mercury is an ideal thermometer filling for 5 reasons: 1. Mercury is a liquid from -39 ºC to 357 ºC. Few materials can be liquid in a similar range–and mercury is the only pure metal that is liquid at room temperature.
