Show that, for any electromagnetic field in a vacuum V. (E x È + c2B x B) e (Ė · B - E B). at where the dots above E and B indicate partial differentiation with respect to time. This equation has the form of a conservation law. The spatial density of the conserved quantity appears between parentheses on the right. This is expressed in volts squared per cubic meter.

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Show that, for any electromagnetic field in a vacuum
V. (E x É + c²B x B)
(Ё - В — Е- В).
at
|
where the dots above E and B indicate partial differentiation with respect to time. This
equation has the form of a conservation law. The spatial density of the conserved quantity
appears between parentheses on the right. This is expressed in volts squared per cubic meter.
Transcribed Image Text:Show that, for any electromagnetic field in a vacuum V. (E x É + c²B x B) (Ё - В — Е- В). at | where the dots above E and B indicate partial differentiation with respect to time. This equation has the form of a conservation law. The spatial density of the conserved quantity appears between parentheses on the right. This is expressed in volts squared per cubic meter.
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