Gale Encyclopedia of Surgery: A Guide for Patients and Caregivers, Gale Encyclopedia of Nursing and Allied Health. The Oxford Pocket Dictionary of Current English. 800C . Generally liquid metal mercury is used in thermometers. What temperature is shown by the following thermometer reading? The extremely fine tube (narrow bore) of a thermometer is called a capillary. ." Thermometer definition, an instrument for measuring temperature, often a sealed glass tube that contains a column of liquid, as mercury, that expands and contracts, or rises and falls, with temperature changes, the temperature being read where the top of the column coincides with a calibrated scale marked on the tube or its frame. The open end of the thermometer is then sealed by placing it over a flame. Liquid thermometers often include both Celsius and Fahrenheit temperature scales, which are displayed on either side of the tube. 5 After the tube is sealed, a scale is applied based on the level at which the fluid rests when inserted into a water bath of 212 degrees Fahrenheit (100 degrees Celsius) versus one at 32 degrees Fahrenheit (0 degrees Celsius). . . Volume Thermometer. A thermometer is an instrument we can use to measure temperature. n. an instrument for measuring and indicating temperature, typically one consisting of a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol that expands and contracts in the tube with heating and cooling. Purpose. A scale is picked that best corresponds to even marks between the reference points. Temperature and heat are two words that often confuse people. Due to environmental concerns, contemporary thermometers are manufactured less with mercury and more with a spirit-filled hydrocarbon liquid. Ink is then rubbed into the marks to highlight the scale values. 16 Oct. 2020 . Celsius The Oxford Pocket Dictionary of Current English., "thermometer A. Thermometer (thermos: hot; metron: measure) is the universal instrument used to measure temperature. • These markings are increasing temperatures in Celsius or Fahrenheit. Most online reference entries and articles do not have page numbers. There is a number scale showing temperature going from cold at the bottom to hot higher up. 16 Oct. 2020 . Experiments confirm the existence of such a temperature, called absolute zero. Thermometer is the device used to measure temperature. try / -trē/ n.ORIGIN: mid 17th cent. C. Expansion Mercury. More About Thermometer: Different types of thermometers are used for different purposes. . Refer to each style’s convention regarding the best way to format page numbers and retrieval dates. The Oxford Pocket Dictionary of Current English. Lowest is 320 and highest is 2120). B. The Oxford Pocket Dictionary of Current English, In everyday terms, temperature is a measure of the "hotness" or "coldness" of a substance. Charles's Law states that when the temperature of a gas increases, so does the volume.. Fahrenheit scale (180 divisions will be there on this scale. World Encyclopedia. Next, the temperature is reduced to room temperature to bring the residual liquid back to a known level. Some thermometer use materials whose electrical properties vary with the temperature. These reference points for the desired scale are marked on the glass tube before engraving or silkscreening is done to fill gradations. Alternately, the bulb can be made by blowing a separate piece of lab material that is then joined with one end of the glass tube. In a maximum thermometer, the liquid is pushed up the glass tube, but cannot fall easily when the temperature lowers. Therefore, that information is unavailable for most content. The tip of the thermometer is usually blue-tipped to distinguish it from the silver tip of an oral/axillary thermometer. Step 2: Electrical insulation property will not be used in any thermometer. The tube is made with a fine passage, or bore, throughout its length. A thermometer is a device used to monitor temperature. The Gale Encyclopedia of Surgery and Medical Tests. Copyright © 1999 - 2020 Krypton Inc. All rights reserved. Retrieved October 16, 2020 from Using Charles's Law, the temperature can be measured by knowing the volume of gas at a certain temperature by using the formula, written below.Translating it to the correct levels of the device that is holding the gas. "thermometer "thermometer Thermistor is a device which becomes a much better electrical conductor when its temperature rises. Electrical insulation. Pick a style below, and copy the text for your bibliography. A thermometer is used to establish a baseline on the admission of a patient to a health care facility, to detect any abnormalities from the normal state, and to establish if … ." (October 16, 2020). Celsius •Bierce, fierce, Pearce, Peirce, pierce, tierce •Fabius, scabious •Eusebius •amphibious, Polybius •dubious…, Isotherm (October 16, 2020). 7 Finally, the thermometers are packaged accordingly and shipped to customers. D. 300C A thermometer is a device used to monitor temperature. This placement is never used with infants. ." This thermometer functions by Charles's Law. This method is used with infants. The numbers are scratched onto the glass and, once complete, the thermometer is dipped in hydrofluoric acid to seal the engraved markings. The thermometer calibration process described above results in what is known as a centigrade thermometer.


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