Mercury Thermometers - US EPA
网页2023年12月18日 — There are two general types of mercury thermometers that measure body temperature: Oral/rectal/baby thermometers, containing about 0.61 grams of mercury. Basal temperature thermometers (used to track slight changes in body temperature), containing about 2.25 grams of mercury.
Mercury-in-glass thermometer - Wikipedia
网页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.
What to Do if a Mercury Thermometer Breaks | US EPA
网页2024年3月15日 — If you break a thermometer, learn how to determine if your thermometer has mercury in it, what not to do in the event of a spill, and how to prepare and cleanup the spill.
Thermometers: Understand the options - Mayo Clinic
网页2023年1月11日 — 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 — …
Mercury Poisoning: Symptoms, Treatment, and More
网页Most oral and rectal mercury thermometers contain about 0.5–0.6 g of mercury. The main health risks associated with mercury are from the vapors, which are produced at room temperature, and especially when mercury is heated. These vapors can be inhaled and absorbed into the body.
Mercury Thermometers | Mercury in Your Environment | US EPA
网页2016年9月13日 — 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.
How thermometers work | Types of thermometers compared - Explain that Stuff
网页2022年6月13日 — Mercury or alcohol? 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.
Why Is Mercury Used In Thermometers? - Science ABC
网页2023年10月19日 — 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.
Types of Thermometers, Their Accuracy, and How to Use Them - Healthline
网页2020年12月15日 — Mercury thermometers provide accurate temperature readings and can be used orally, rectally, or under the arm. They don’t require batteries.
Mercury-in-glass thermometer explained - Everything Explained …
网页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.