Legal Considerations. Cooling is the preferred method. - Definition, Wirkungsweise, Vorteile, Nachteile 3. A primarily clinical trial has been undertaken to investigate and compare the use of mercury and digital thermometers in a ward situation. Mercury is used in thermometers because it expands when it is heated. Define Mercury thermometer. A thermometer is a device for measuring temperature, usually one that works by the expansion of a column of fluid. mercury thermometer . Do try the cooling method first. oj4. The liquid was almost always mercury or coloured alcohol, sealed in a glass tube with a gas like nitrogen or argon making up the rest of the volume of the tube. Types of thermometer. In a mercury or alcohol thermometer, the liquid expands as it is heated and contracts when it is cooled, so the length of the liquid column is longer or … ‘Some states have banned the use of mercury thermometers as a first step toward phasing out the use of this toxic metal altogether.’ ‘Another option is a digital aural thermometer that measures the temperature in the ear.’ ‘Formerly a medicine-cabinet staple, these mercury thermometers have lately been ruled a public health hazard.’ Was sind Alkoholthermometer? What does mercury thermometer mean? Writer Bio. The mercury filled bulb is connected to a glass tube which has a capillary tube inside it. Information about mercury thermometer in the AudioEnglish.org dictionary, synonyms and antonyms. In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. There are a number of different model types, sizes, and specifications, but the general operating principle is … 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. Warnings. If a mercury thermometer breaks or leaks, it can release toxic vapors. Thermometric Property | Definition, Formulas, Properties – … • MERCURY THERMOMETER (noun) The noun MERCURY THERMOMETER has 1 sense:. The mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714). thermometer: An instrument for measuring temperature, especially one having a graduated glass tube with a bulb containing a liquid, typically mercury or colored alcohol, that expands and rises in the tube as the temperature increases. COBUILD Key Words for Mechanical Engineering . These liquid thermometers are based on the principal of thermal expansion. Das Substantiv (Hauptwort, Namenwort) dient zur Benennung von Menschen, Tieren, Sachen u. Ä. In response to our understanding of the health concerns associated with mercury exposure, these types of thermometers usually use some type of liquid alcohol. Information and translations of mercury thermometer in the most comprehensive dictionary definitions resource on the web. It is considered the safest way to … Imprinted on the tube is a temperature scale. Breite Akzeptanz in medizinischen Kreisen gewann das Thermometer jedoch erst im Jahre 1868, als Carl Wunderlich eine Studie veröffentlichte, die dazu beitrug, den gesunden Körpertemperaturbereich des Menschen zu bestimmen. Mercury is a dangerous metal. means a product or component, other than a dry cell battery, of a product used for measuring temperature that contains mercury or a mercury compound intentionally added to the product or component. Mercury located in the bulb expands with increasing temperature and contracts with decreasing temperature. Alkoholthermometer ist eine Art Thermometer… Liquid thermometers can be limited by the type of liquid used. Both laboratory and clinical studies show that there is no significant difference in the average accuracy of the two types of thermometers, however there is a greater fluctuation of readings of temperature when using electronic thermometers. Contact your local trash collection program to see if there's a … In addition, the mercury expansion is more predictable so it can be measured more easily, at the same time published its scale that today is called the Fahrenheit scale to measure temperature. In a mercury or alcohol thermometer, the liquid expands as it is heated and contracts when it is cooled, so the length of the liquid column is longer or … They are also safe, since they can withstand temperature extremes without breaking. 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