Jefimenko's work is interesting and very valuable, especially on electrets and retarded fields. But we had the same thing from retarded potentials, so it's not really innovative, and it's not against Maxwell but against a misinterpretation of Maxwell (the fact that electric and magnetic fields could be the cause of each other, which is admittedly false; these effects are concomitant from charges). As for electrets, he left us a legacy of ingenious experiments. Unfortunately, no technology has really emerged from this work. But he's a good physicist, and his work might be worth revisiting.
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"Open your mind, but not like a trash bin"
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