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Published online by Cambridge University Press: 06 January 2010
Throughout the book all equations and formulas are expressed in the MKSA system of units. However, Gaussian-cgs units are still frequently used by many scientists. In this latter system, all electrical quantities are in electrostatic units (esu) except for B, which is in electromagnetic units (emu). Most formulas that are in MKSA units can be converted to Gaussian-cgs units by replacing B with (B/c) and ε0 by 1/4π, where c = (ε0μ0)−1/2 is the speed of light.
For easy reference, the formulas in Table E. 1 are given in both MKSA and Gaussiancgs units. The last four equations are known as the Maxwell equations and, as given here, pertain to a vacuum.
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