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definition

The physical constant \ F_C = \frac{1} {4 \pi \varepsilon_0} \frac{q_1 q_2} {r^2} where q1 and q2 are the charges, and r is the distance between them. Likewise, The value of \varepsilon_0 =\frac {1}{\mu_0 c_0^2} = 8.854187817... 12 A12 F/m where c0 is the speed of light in vacuum and 0 is the magnetic constant or vacuum permeability.[2] source: http://en.wikipedia.org/wiki/Permittivity_of_free_space [1] "electric constant". Electropedia: International Electrotechnical Vocabulary (IEC 60050). Geneva: International Electrotechnical Commission. http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-11-03. Retrieved 2010-04-02 . [2] Mohr, Peter J.; Taylor, Barry N.; Newell, David B. (2008). "CODATA Recommended Values of the Fundamental Physical Constants: 2006". Rev. Mod. Phys. 80: 633730. doi:10.1103/RevModPhys.80.633. http://physics.nist.gov/cuu/Constants/codata.pdf. Direct link to value..

exact synonym

vacuum permittivity constant,electric constant

Types