APPLICATION OF THERMODYNAMIC 0th LAW: Thermometer
By : Kanty Mariani (18630101)
Holla!
I'm Kanty and I want to share some information about the application of thermodynamic law.
Etymologically, Thermodynamics (Greek: thermos is "heat" and dynamic is "change") is the physics of energy, heat, work, entropy, process spontanity, and static mechanics. This branch of physical chemistry studies the exchange of energy in the form limiting systems, heat or work and the environment. The application of thermodynamics can occur in the human body, refrigerators, cars, airplane, electronic device, power plants and industry (Chang, Raymond, 2004).
The law and application of thermodynamics that will describe is the 0th thermodynamic law that reads "If two objects are in thermal equilibrium with a third object, then the three objects are in thermal equilibrium with each other". Before discussing the theory of temperature, there are two terms that frequently many people don't understand, That is thermal contact and thermal equilibrium. Thermal contact occurs when there are two or more objects that interact with each other by exchanging energy between these matters caused by changes in temperature (Raymond A.Serway, John W. Jewett, Jr,2010).
Logically, we can say that object B and object C are in thermal equilibrium, even though the two don't touch each other. Objects A and object B are in thermal equilibrium, meaning that the temperature of object A equal with temperature of object B. Object A and object C are also in thermal equilibrium, the temperature of object A equal with temperature of object C, because of TA equal with TB and TA equal with TC, then TB equal with TC.
Tools or machine that apply the principle of the 0th modern law are thermometers, temperature measuring tools where there is alcohol or mercury in contact with glass and glass in contact with objects whose temperature is measured, for example air, water or the human body. If we want to know whether two objects have the same temperature, then it objects don't need to be caressed and experimental changes in their properties. what requires to be accomplished is to observe whether the two objects experience thermal equilibrium with the third object. The third object is a thermometer. A thermometer that we often find is a glass thermometer. A glass thermometer includes of a glass capillary tube that is connected to a glass ball filled with mercury liquid or alcohol. Sprinkle over liquid containing liquid-vapor or inert gas. If the temperature increases, the volume of the liquid increases too so that the length of the liquid in the capillary tube increases. The temperature of the liquid can affect the length of liquid inside the capillary tube. Also besides, there are cured gas volume thermometers which have very high accuracy, so they are used as standard instruments for the calibration of other thermometers.Nahh, This thermometer uses gas as a thermometric compound like hydrogen and helium by operating the thermometric properties of the pressure produced by the gas. We know that the pressure produced is measured using a mercury open tube manometer. As Gas expansion occurs, pushing the mercury in the open tube up.
The principle is the same for the several thermometer examples that have been mentioned, when the thermometer caresses an object with a certain temperature, there will be a thermal equilibrium shown.
Sources :
Chang, Raymond.2004. Kimia Dasar Konsep- Konsep Inti.Jilid 1 edisi 3. Jakarta: Erlangga.
Raymond A, Serway, John W. Jewett, Jr.2010. Fisika Untuk sains dan Teknik, Jakarta: Salemba teknika
Holla!
I'm Kanty and I want to share some information about the application of thermodynamic law.
Etymologically, Thermodynamics (Greek: thermos is "heat" and dynamic is "change") is the physics of energy, heat, work, entropy, process spontanity, and static mechanics. This branch of physical chemistry studies the exchange of energy in the form limiting systems, heat or work and the environment. The application of thermodynamics can occur in the human body, refrigerators, cars, airplane, electronic device, power plants and industry (Chang, Raymond, 2004).
The law and application of thermodynamics that will describe is the 0th thermodynamic law that reads "If two objects are in thermal equilibrium with a third object, then the three objects are in thermal equilibrium with each other". Before discussing the theory of temperature, there are two terms that frequently many people don't understand, That is thermal contact and thermal equilibrium. Thermal contact occurs when there are two or more objects that interact with each other by exchanging energy between these matters caused by changes in temperature (Raymond A.Serway, John W. Jewett, Jr,2010).
Logically, we can say that object B and object C are in thermal equilibrium, even though the two don't touch each other. Objects A and object B are in thermal equilibrium, meaning that the temperature of object A equal with temperature of object B. Object A and object C are also in thermal equilibrium, the temperature of object A equal with temperature of object C, because of TA equal with TB and TA equal with TC, then TB equal with TC.
Tools or machine that apply the principle of the 0th modern law are thermometers, temperature measuring tools where there is alcohol or mercury in contact with glass and glass in contact with objects whose temperature is measured, for example air, water or the human body. If we want to know whether two objects have the same temperature, then it objects don't need to be caressed and experimental changes in their properties. what requires to be accomplished is to observe whether the two objects experience thermal equilibrium with the third object. The third object is a thermometer. A thermometer that we often find is a glass thermometer. A glass thermometer includes of a glass capillary tube that is connected to a glass ball filled with mercury liquid or alcohol. Sprinkle over liquid containing liquid-vapor or inert gas. If the temperature increases, the volume of the liquid increases too so that the length of the liquid in the capillary tube increases. The temperature of the liquid can affect the length of liquid inside the capillary tube. Also besides, there are cured gas volume thermometers which have very high accuracy, so they are used as standard instruments for the calibration of other thermometers.Nahh, This thermometer uses gas as a thermometric compound like hydrogen and helium by operating the thermometric properties of the pressure produced by the gas. We know that the pressure produced is measured using a mercury open tube manometer. As Gas expansion occurs, pushing the mercury in the open tube up.
The principle is the same for the several thermometer examples that have been mentioned, when the thermometer caresses an object with a certain temperature, there will be a thermal equilibrium shown.
Sources :
Chang, Raymond.2004. Kimia Dasar Konsep- Konsep Inti.Jilid 1 edisi 3. Jakarta: Erlangga.
Raymond A, Serway, John W. Jewett, Jr.2010. Fisika Untuk sains dan Teknik, Jakarta: Salemba teknika
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