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 Its principle of operation is based on the dependence in an ideal gas of the pressure or volume on the temperature. Bimetal (bimetallic) This is a mechanic type that works with a bimetal strip. Constant Volume Gas Thermometer 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 gas thermometer n a device for measuring temperature by observing the pressure of gas at a constant volume or the volume of a gas Its principle of operation is based on the dependence in an ideal gas of the pressure or volume on the temperature. Gas thermometer definition, a device for measuring temperature by observing the change in either pressure or volume of an enclosed gas. This definition explains the meaning of Liquid-in-Glass Thermometer and why it matters. Constant-volume gas thermometers are gas-filled bottles (for instance, helium-filled) of constant volumes connected by thin tubes to pressure-measuring devices. Celsius, Fahrenheit, Kelvin, OH MY. • 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 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. 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. What is the meaning of gas thermometer? thermometer definition in English dictionary, thermometer meaning, synonyms, see also 'clinical thermometer',gas thermometer',resistance thermometer',dry-bulb thermometer'. It consists of … “Misinformation” vs. “Disinformation”: Get Informed On The Difference. Hydrogen, oxygen, nitrogen, and carbonic-acid gas-thermometers have been employed. A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object). The constant-volume gas thermometer – it contains a gas; when the temperature rises, the pressure increases. Bimetallic strip. Solid strips of different materials such as copper and aluminum can be made to stick together (bi-metallic strip). What Is An Em Dash And How Do You Use It? Farlex Partner Medical Dictionary © Farlex 2012. (85.) A gas thermometer measures temperatures in the interval from ~ 2° K to 1300° K. The maximum attainable accuracy of a gas thermometer, depending on the temperature measured, varies from 3 × 10-3 °K to 2 × 10-2 °K. However, we note in Section 2.8 that any real gas will exhibit departures from ideal gas behavior if we make sufficiently accurate measurements. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. A gas thermometer can be filled with any gas, but the most popular option is hydrogen. a device for measuring temperature. A cylindrical Ideal Gas thermometer of diameter 3 mm and height 10 cm is exposed to a temperature source. The temperature of a gas is a measure of the average translational kinetic energy of the molecules. Any two different metals or metal alloys exhibit the thermoelectric effect, but only a few are used as thermocouples—e.g., antimony and bismuth, copper and iron, or copper and constantan (a copper-nickel alloy). 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. the bulb of a mercury-in-glass thermometer or the digital sensor in an Gas thermometers work best at very low temperatures. A gas thermometer of such high precision is a complicated device; the deviation of the properties of the gas filling the device from the properties of an ideal gas, the change in bottle volume with temperature changes, the presence of gas impurities and especially condensed gas impurities, gas sorption and desorption by bottle walls, gas diffusion through bottle walls, and temperature distribution along the connecting tube must be taken into account when using such a device. 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. constant-volume gas thermometers Definition Constant volume gas thermometer is used to calculate the change in temperature of the system. Constant volume gas thermometer - definition A constant volume gas thermometer contains a mass of gas enclosed in a bulb attached to a mercury manometer having a column partially filled with mercury that is connected to a flexible tube containing another partially filled column of mercury, known as reservoir, attached to the other end. 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 measures temperature by the variation in volume or pressure of a gas. 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 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 … The range of a thermometer is the difference between the maximum and minimum temperatures that the thermometer … Thermocouple, a temperature-measuring device consisting of two wires of different metals joined at each end. Definition of gas thermometer in English: gas thermometer. 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. 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