 Quote by jtbell
Correct. I'd state this more strongly: you cannot create oscillating electric and magnetic fields completely independently, and then "combine" them. When you create an oscillating electric field, you must get an oscillating magnetic field along with it, according to Maxwell's equations. Similarly, if you create an oscillating magnetic field, you must get an oscillating electric field along with it.
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That's right in principle but (at RF) you can make an antenna that has both inductive and capacitative elements and, together, they can produce EM fields which are not what you'd get from either by itself. This only applies in the near field, however and the (radiated) fields settle down according to the impedance of free space when they are away from the local influence of the two radiators. In receiving terms, it's relatively easy to make a magnetic or electric field probe. This will tell you the local fields independently ( as they tend to be affected by nearby structures which modify the wave impedance).
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