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**nairbdm** Show that in empty space, you can get electromagnetic waves. Start by writing down Maxwell's equations for empty space, where there are no currents or charges (*p*=0,j=0). Then show that you can derive wave equations from these empty space Maxwell's equations. That is, you should get:

(del)^2E=(1/(c^2))(2nd derivative with respect to t of E)

and

(del)^2B=(1/(c^2))(2nd derivative with respect to t of B)

Find out what *c* is in terms of Î knot and m knot.

Hint: to begin, operate on one of Maxwell’s equations with either del, del (dot), or del X. Then use the table of vector identities involving del.

Del = upside-down triangle (operator)

Thanks.