Lecture_01_01_11_2012 - Definition of Temperature Ron...

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Definition of Temperature Ron Reifenberger Birck Nanotechnology Center Purdue University January 11, 2012 Lecture 1 1
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A Brief History Prior to 18 th Century, society supports advances in medicine (health) and astronomy (navigation; time keeping) Other realms of science were viewed as a purely philosophic endeavor – not much in the way of experiments id 18 h entury (1750’s); transition from rural to urban mid 18 th Century (1750 s); transition from rural to urban society – start of Industrial Revolution; “How is heat converted to work in a steam engine?” h 19 th Century (1800-1850) scientists were encouraged to study engines and their efficiency; is a perpetual motion machine possible? Two “Laws of Thermodynamics” emerge 2
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YEAR Electricity and Magnetism 1st Law Thermodynamics 2nd Law Thermodynamics r ncis H uksb first l ctr st tic TIMELINES 1706 Francis Hauksbee - first electrostatic generator 1733 Charles de Cisternay Dufay - electrified objects repel as well as attract 1738 Bernoulli uses idea of “atomic” otion to calculate pressure motion to calculate pressure 1745 Bishop Von Kleist & Cunaeus of Leyden - Leyden jar (first capacitor) 1746 – Ben Franklin - simple theory of electricity; two polarities of charge Black - discovers heat capacity latent ~1760 J. Black discovers heat capacity, latent heat; inherently contradicts the calorique theory 1760-75 J. Watt – invents steam engine (condenser) 85 Chales Coulomb; force law for 1785 electrostatics 1779 Wm. Cleghorn – formulated coherent calorique theory 1790 Count Rumford (Benj. Thompson) questions caloric theory while boring out canons in Bavaria 1794 Boulton and Watt - commercial steam engines; first attempts to define w ork, power, horsepower, etc. 98 Count Rumford – established connection 3 1798 between mechanical work and heat 1800 Alexandre Volta – first electric battery
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1819 Hans Christian Oersted – magnetic field from current ndre Marie Ampere – first theory of the erapath links heat w ith “atomic” 1820 Andre Marie Ampere first theory of the magnetic field Herapath links heat w ith atomic motion 1821 Michael Faraday – primitive electric motor 1824 Carnot formulates 2 nd Law; supports alorique theory calorique theory 1827 Georg Ohm – Ohm’s Law 1830 William Sturgeon – first electromagnet 1831 Michael Faraday – electromagnetic induction 1833 Joesph Henry – self inductance 1834
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This note was uploaded on 02/05/2012 for the course PHYS 242 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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Lecture_01_01_11_2012 - Definition of Temperature Ron...

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