They were simple, inexpensive, long-lasting, and able to measure a wide temperature span. Definition of gas thermometer : a thermometer containing gas (as hydrogen) as the enclosed thermometric substance, variations in temperature being indicated by the change in pressure of a fixed quantity of gas required to maintain the gas at a constant volume or the change in volume of a fixed quantity of gas maintained at a constant pressure Information and translations of gas thermometer in the most comprehensive dictionary definitions Definition of Temperature | Doc Physics - Duration: 13:30. The thermometer is a device used to check the temperature of an object. In such gas thermometers, gas temperature changes in the bottle are proportional to pressure changes. A thermometer has two important elements: (1) a temperature sensor (e.g. What are synonyms for gas thermometer? Gases such as nitrogen or simply air are also suitable substances for use in volumetric gas thermometers. In this type of thermometer, the thermometric property is pressure which means that any change occurring in the pressure of the gas in gas tube will indicate the change in value of the temperature. Its principle of operation is based on the dependence in an ideal gas of the pressure or volume on the temperature. The range of a thermometer is the difference between the maximum and minimum temperatures that the thermometer … Meaning of gas thermometer. (85.) A constant volume gas thermometer is composed of a bulb filled with a fixed amount of a dilute gas ⦠Origin. One common apparatus is a constant volume thermometer. It measures temperature in the range from o k 5oo k. ÎV α ÎT Where ÎT=ÎV/Vογ=ÎV×273/Vο And γ=1/273 for traduction gas thermometer dans le dictionnaire Anglais - Francais de Reverso, voir aussi 'thereafter',theatregoer',theatre-goer',therefore', conjugaison, expressions idiomatiques a gas thermometer comprises a casing with a casing end section of good heat conducting metal and a main casing section of poorly heat conductive material A Liquid-in-Glass Thermometer is a glass capillary tube having a liquid-filled bulb present at one end. Liquid thermometers were once the most common type in use. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. This type works best with very low temperatures. • GAS THERMOMETER (noun) The noun GAS THERMOMETER has 1 sense: 1. thermometer that measures temperature by changes in the pressure of a gas kept at constant volume Also shown is the equipment for the four temperature baths Pressure is the force per unit area that the gas molecules exert on the container as they Definition of gas thermometer in English: gas thermometer. Figure 1.1: The pressure gauge on the gas thermometer, the gas thermometer and the temperature bath equipment The Pascal: 1 Pa = 1 N/m2 1atm=1.01x105Pa The Torr: 1 Torr = 1 mm Hg 1atm=760Torr The lb/in2 (psi) 1lb/in2 =6870.8Pa1atm=14.7lb/in2 If we could use an ideal gas in our ideal-gas thermometer, we could be confident that we had a rigorous operational definition of temperature. Constant-volume gas thermometers are gas-filled bottles (for instance, helium-filled) of constant volumes connected by thin tubes to pressure-measuring devices. And γ=1/273 for ideal gases. In a maximum thermometer, the liquid is pushed up the glass tube, but cannot fall easily when the temperature lowers. A thermometer has two important elements: (1) a temperature sensor (e.g. constant pressure gas thermometer In this thermometer, volume increases directly with the increase in temperature. One junction is placed where the temperature is to be measured, and the other is kept at a constant lower temperature. Learn more. A thermometer has two important elements: (1) a temperature sensor (e.g. Typically, these gas thermometers work best at measuring very low temperatures. One common apparatus is a constant volume thermometer. Where ΔT=ΔV/Vογ=ΔV×273/Vο. A measuring instrument is connected in the circuit. ter. a device for measuring temperature by observing the pressure of gas at a constant volume or the volume of a gas kept at a constant pressure. The glass is then sealed off, resulting in a vacuum when the mercury contracts during cooling. a device for measuring temperature. air thermometer. Gas thermometer definition: a device for measuring temperature by observing the pressure of gas at a constant volume... | Meaning, pronunciation, translations and examples What does gas thermometer mean? Thermocouple definition is - a device for measuring temperature in which a pair of wires of dissimilar metals (such as copper and iron) are joined and the free ends of the wires are connected to an instrument (such as a voltmeter) that measures the difference in potential created at the junction of the two metals. Bimetal (bimetallic) This is a mechanic type that works with a bimetal strip. a thermometer filled with dry air or a gas, the expansion or increased pressure of which indicates the degree of heat; used to measure high temperatures. A gas thermometer measures temperature by the variation in volume or pressure of a gas. It is similar to a partial immersion thermometer but a difference exists in the way these thermometers are used and in the areas they are applied. Proper usage and audio pronunciation (plus IPA phonetic transcription) of the word gas Definition of gas thermometer in English: gas thermometer See synonyms for gas thermometer noun historical Physics A thermometer in which the change of volume or pressure of a column of gas is used to measure temperature. a device for measuring temperature by observing the pressure of gas at a constant volume or the volume of a gas kept at a constant pressure. A constant volume gas thermometer is composed of a bulb filled with a fixed amount of a dilute gas that is attached to a mercury manometer. If your language skills aren’t already top-notch, then this vocab quiz can get you up to speed! Hydrogen, oxygen, nitrogen, and carbonic-acid gas-thermometers have been employed. gas thermometer- thermometer that measures temperature by changes in the pressure of a gas kept at constant volume. gas thermometer in American English. A gas thermometer measures temperature by the variation in volume or pressure of a gas. Enrich your vocabulary with the English Definition noun historical Physics . thermometer definition in English dictionary, thermometer meaning, synonyms, see also 'clinical thermometer',gas thermometer',resistance thermometer',dry-bulb thermometer'. Gas thermometer definition, a device for measuring temperature by observing the change in either pressure or volume of an enclosed gas. the bulb of a mercury-in-glass thermometer or the digital sensor in an What Does Amen Mean At The End Of A Prayer? The Liquid-in-Glass Thermometer consists of a bulb, a stem, a temperature scale, a reference point, an inert gas and a working point. “Affect” vs. “Effect”: Use The Correct Word Every Time. ). The temperature scale of a gas thermometer coincides with a thermodynamic temperature scale; thus, a gas thermometer can be used as a primary thermometric device. Constant-volume gas thermometers are used more often than constant-pressure. Meaning of gas thermometer. A thermometer in which the change of volume or pressure of a column of gas is used to measure temperature. Significant experimental contributions by NBS began with the work of Hoge and Brickwedde (29), who calibrated an ensemble of resistance thermometers against a gas thermometer to establish a scale (known as the NBS-39 Scale) for the calibration of thermometers from 14K to 83K. Now that we have learned the principle of gas thermometers and understood what absolute zero is, let us learn about different kinds of gas thermometers. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. However, we note in Section 2.8 that any real gas will exhibit departures from ideal gas behavior if we make sufficiently accurate measurements. constant-volume gas thermometers Definition Constant volume gas thermometer is used to calculate the change in temperature of the system. The constant-volume gas thermometer – it contains a gas; when the temperature rises, the pressure increases. Total Immersion Thermometer is a glass thermometer that is used to measure the temperature of industrial liquids and gases. © 2003-2012 Princeton University, Farlex Inc. Many clinical thermometers today are designed to display the output in a digital format to make temperature reading easier. A gas thermometer can be filled with any gas, but the most popular option is hydrogen. Its principle of operation is based on the dependence in an ideal gas of the pressure or volume on the temperature. Interpolating gas thermometer 3.0 K - 24.5561 K Relation of pressure and temperature of constant volume of gas when use helium-4 and helium-3 as working fluid Platinum resistance thermometer 13.8033 K - 1234.93 K the act of a person who encloses something in or as if in a casing or covering, a school giving instruction in one or more of the fine or dramatic arts, a comic character, usually masked, dressed in multicolored, diamond-patterned tights, and carrying a wooden sword or magic wand, Dictionary.com Unabridged Thermometer that measures temperature by changes in the pressure of a gas kept at constant volume (synset 103431195) hypernym : thermometer - measuring instrument for measuring temperature © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins The NBS-55 was a simple numerical modification to the NBS-39 Constant-Volume, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content. Modified entries © 2019 by Penguin Random House LLC and HarperCollins Publishers Ltd. Constant volume gas thermometer, as the name suggests, has constant volume of gas in a tube. a device for measuring temperature. Why Do “Left” And “Right” Mean Liberal And Conservative? gas-thermometer: A thermometer in which the variation of volume or tension of a fixed quantity of dry gas indicates the temperature of the latter. A gas thermometer is a thermometer that measures temperature by the variation in volume or pressure of a gas. This type works best with very low temperatures. Volume Thermometer This thermometer functions by Charles's Law.Charles's Law states that when the temperature of a gas increases, so does the volume. The mercury manometer has a column partially filled with mercury that is connected to a flexible tube that has another partially filled column of mercury, called a reservoir, attached to the other end. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. a device for measuring temperature by observing the change in either pressure or volume of an enclosed gas. gas-thermometer: A thermometer in which the variation of volume or tension of a fixed quantity of dry gas indicates the temperature of the latter. In this thermometer, volume increases directly with the increase in temperature. See more. Constant Volume Gas Thermometer What is the definition of gas thermometer? Gasthaus definition is - a German inn or tavern. Any two different metals or metal alloys exhibit the thermoelectric effect, but only a few are used as thermocouplesâe.g., antimony and bismuth, copper and iron, or copper and constantan (a copper-nickel alloy). an instrument used to measure temperature, esp one in which a thin column of liquid, such as mercury, expands and contracts within a graduated sealed tubeSee also clinical thermometer, gas thermometer, resistance thermometer, thermocouple, pyrometer constant pressure gas thermometer. gas thermometer n a device for measuring temperature by observing the pressure of gas at a constant volume or the volume of a gas Also known as constant-volume gas thermometer. 4. The temperature of a gas is a measure of the average translational kinetic energy of the molecules. The significance of constant volume gas thermometers is that they are used to calibrate other thermometers. a device for measuring temperature by observing the change in either pressure or volume of an enclosed gas. See synonyms for gas thermometer. An introduction to the constant gas volume thermometer and its use as a standard for other thermometers.Thermometers are working examples of the zeroth law of thermodynamics. Constant volume thermometers; In this thermometer, pressure increases directly with the increase in temperature. The temperature of the fixed point (reference point) of the International Practical Temperature Scale was determined with the aid of a gas thermometer. 1.2.2 Gas Thermometer Shown in Figure 1.1 is the gas thermometer which consists of a hollow spherical tank filled with helium and connected to an absolute pressure gauge. 4. Conceptual ideas develop logically and sequentially, ultimately leading into the mathematics of the topics. Farlex Partner Medical Dictionary © Farlex 2012. https://encyclopedia2.thefreedictionary.com/Gas+Thermometer. A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object). It measures temperature in the range from o k 5oo k. ΔV α ΔT. Many industrial thermometers utilize gas in a metal or glass enclosure. What is the meaning of gas thermometer? thermometer- measuring instrument for measuring temperature. All Free. In a hot gas, the molecules move faster than in a cold gas; the mass remains the same, but the kinetic energy, and hence the temperature, is greater because of … Mid 19th century; earliest … Love words? In making a liquid thermometer, the mercury is ordinarily driven to the top of the tube by heating. Gas Thermometer. How do you use gas thermometer in a sentence? A constant volume gas thermometer works on the zeroth law of thermodynamics, which states that if two bodies individually are in thermal equilibrium with a third body then, the two bodies will also be in thermal equilibrium with each other. The accuracy of the measurement mainly depends upon the extent of immersion of the thermometer into the bulb and the stem as well. 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