Continuity Equation
In special relativity, the statement of charge conservation is that the Lorentz invariant divergence of J is zero::
where is the 4-gradient. This is the continuity equation.
In general relativity, the continuity equation is written as:
where the semi-colon represents a covariant derivative.
Read more about this topic: Four-current
Famous quotes containing the words continuity and/or equation:
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