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relative permittivity

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noun
the ratio of the permittivity of a substance to that of free spaceSymbol: ε r Also called: dielectric constant
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Scientific definitions for relative permittivity

relative permittivity

The ratio of the magnetic permittivity of a substance to the permittivity of a vacuum.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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