Abstract
The history of electrical units of measurement is only about 200 years long, but certainly convoluted. It is a story of numerous international conferences, congresses, committees, actions (and inactions), and changes in what has eventually become the international standard for electrical measurement: electric current. Electrical measurement is intricately linked to magnetic measurements, forming a cohesive system. This chapter describes the journey from tiny laboratory-based measurements to practical-sized units. The standard units have been, at various times, EMF, resistance, conductance, and magnetic units. The result so far is that the standard electrical unit of measurement is the SI ampere measuring the flow rate of electrical charge, with many the other units derived from combinations of the ampere and other base units. We can expect this saga to continue, as re-definition of the ampere is currently being considered by the SI community.
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References
History of measurement. http://en.wikipedia.org/wiki/History_of_measurement. Accessed 31 May 2015
History of Measurement. http://historyworld.net/. Accessed 30 June 2015
Metric system. https://en.wikipedia.org/wiki/Metric_system. Accessed 13 June 2015
Katz DA Scientific Measurements. http://www.chymist.com/Measurement.pdf. Accessed June 2015
Electric current. https://en.wikipedia.org/wiki/Electric_current. Accessed 16 Sept 2016
The ampere (A). http://www.npl.co.uk/reference/measurement-units/si-base-units/the-ampere. Accessed 16 Sept 2016
Historical context of the SI: Unit of electric current (ampere). http://physics.nist.gov/cuu/Uts/ampere.html. Accessed 16 Sept 2016
History of the ampere. http://sizes.com/units/ampHist.htm, Sizes: the online quantinary. Accessed 16 Sept 2016
Electrical Units and Standards, U.S. Department of Commerce, National Bureau of Standards Circular 60, 1916, http://sizes.com/library/USA/NIST/NBS_Circ60.htm. Accessed 16 Sept 2016
Du Sautoy M Video series: “The Science of Measurement”, viewed in 8/2015 on Acorn TV
History of electromagnetic theory. https://en.wikipedia.org/wiki/History_of_electromagnetic_theory. Accessed 10 Oct 2016
Gaussian units. https://en.wikipedia.org/wiki/Gaussian_units. Accessed 18 Sept 2016
Centimeter-gram-second system of units. https://en.wikipedia.org/wiki/Centimetre%E2%80%93gram%E2%80%93second_system_of_units. Accessed 21 Sept 2016
Standard Cell. http://www.expertsmind.com/topic/potentiometry/standard-cell-910914.aspx. Accessed 13 Oct 2016
History of the battery. https://en.wikipedia.org/wiki/History_of_the_battery. Accessed 10 Oct 2016
Weston cell. https://en.wikipedia.org/wiki/Weston_cell. Accessed 13 Oct 2016
Weston Standard Cell. http://www.tutorhelpdesk.com/homeworkhelp/Engineering-/Weston-Standard-Cell-Assignment-Help.html. Accessed 13 Oct 2016
Current measurement https://en.wikipedia.org/wiki/Electric_current#Current_measurement. Accessed 11 Oct 2016
Ammeter. https://en.wikipedia.org/wiki/Ammeter. Accessed 15 Oct 2016
Ammeter Working Principle and Types of Ammeter. http://www.electrical4u.com/ammeter/. Accessed 21 Sept 2016
Hall effect. https://en.wikipedia.org/wiki/Hall_effect. Accessed 15 Oct 2016
Current transformer. https://en.wikipedia.org/wiki/Current_transformer. Accessed 15 Oct 2016
Magnetoresistance. https://en.wikipedia.org/wiki/Magnetoresistance. Accessed 15 Oct 2016
Graphic: Daniell Cell. http://media.web.britannica.com/eb-media/17/63617-004-88C4784B.gif. Accessed 11 Oct 2016
Cardarelli F (2003) Encyclopaedia of scientific units, weights and measures: their SI equivalents and origins, English translation by Shields MJ. Springer, London Limited, London
American Petroleum Institute (1974) Manual of petroleum measurement standards, Chapter 15, Section 2, conversion of operational and process measurement units to the metric (SI) system. API Publication 2564, March 1974
Weast RC et al (eds)(1968) Handbook of chemistry and physics, 49th edn. The Chemical Rubber Company, Cleveland
Peters MS et al (eds)(1963) Perry’s chemical engineers’ handbook (4th edn). McGraw-Hill Book Company, New York
Small-unit metric system or centimeter-gram-second (cgs) system of units. http://whatis.techtarget.com/definition/small-unit-metric-system-or-centimeter-gram-second-cgs-system-of-units. Accessed 21 Sept 2016
Statohm. http://whatis.techtarget.com/definition/statohm-stat-W. Accessed 21 Sept 2016
Ohm’s law. https://en.wikipedia.org/wiki/Ohm%27s_law. Accessed 18 Sept 2016
Current clamp. https://en.wikipedia.org/wiki/Current_clamp. Accessed 21 Sept 2016
Voltage. https://en.wikipedia.org/wiki/Voltage. Accessed 21 Sept 2016
Units in Electricity and Magnetism. http://www.qsl.net/g4cnn/units/units.htm. Accessed 13 Oct 2016
Danescu DP (2009) The evolution of the Gaussian Units. The General Science Journal, 4 Jan 2009, http://www.gsjournal.net/old/science/danescu.pdf. Accessed 10/2016
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Treese, S.A. (2018). Historical Electrical Charge and Current. In: History and Measurement of the Base and Derived Units. Springer, Cham. https://doi.org/10.1007/978-3-319-77577-7_11
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DOI: https://doi.org/10.1007/978-3-319-77577-7_11
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