Web10 apr. 2024 · Alcohol thermometers must be used in preference to mercury thermometers where ever practical, this especially so when a thermometer is to be left in a heating block where history has shown that they are vulnerable to knocks and breakage. Cleaning up following the spillage of mercury. The room should be vacated and … WebMercury was the liquid of choice for many years, because it expands and contracts at a very constant rate, making mercury thermometers very accurate. However, because of concerns about mercury toxicity, mercury has often been replaced with alcohol that is colored red. Mercury has a silver color.
Why are mercury thermometers dangerous? - Genetree.com
Web11 sep. 2024 · If the mercury is not cleaned up properly and the glass breaks, it can be dangerous to use the mercury thermometer. Humans and wildlife can be exposed to … WebA mercury or digital thermometer can be used. Digital thermometers are a little easier to read, especially in those groggy first few minutes of the day just after waking, but they … topt specials
Mercury Thermometers Mercury US EPA
The mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714). It consists of a bulb containing mercury attached to a glass tube of narrow diameter; the volume of mercury in the tube is much less than the volume in the bulb. The volume of … Meer weergeven The thermometer was used by the originators of the Fahrenheit and Celsius scales. Anders Celsius, a Swedish scientist, devised the Celsius scale, which was described in … Meer weergeven One special kind of mercury-in-glass thermometer, called a maximum thermometer, works by having a constriction in the neck close to the bulb. As the … Meer weergeven Mercury thermometers cover a wide temperature range from −37 to 356 °C (−35 to 673 °F); the instrument's upper temperature range may be extended through the introduction of an inert gas such as nitrogen. This introduction of an inert gas increases … Meer weergeven • Mercury probe, an electrical probing device to sample for electrical characterization • Mercury switch, an electrical circuit, on-off switch using the element … Meer weergeven A maximum minimum thermometer, also known as Six's thermometer, is a thermometer which registers the maximum and minimum temperatures reached over a period of time, typically 24 hours. The original design contains mercury, but solely as a … Meer weergeven As of 2012 , many mercury-in-glass thermometers are used in meteorology; however, they are becoming increasingly rare for other uses, as many countries banned them for medical use due to the toxicity of mercury. Some manufacturers use Meer weergeven WebCorrect option: (C) Mercury is a liquid that can flow but does not stick to the glass. Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature brings about sufficient expansion which can be detected in the capillary of the calibrated part of the thermometer. Suggest Corrections. Web14 dec. 2011 · Analog "bulb" thermometers use mercury or an organic fluid such as alcohol, kerosene, toluene or some proprietary liquid. All those substances have one … topt20