I was only yesterday wondering if the swastika shape was a coil shape encoded and simplified. I am interested in non circular wound coils and their effects. Strangely I have found absolutely no references to anything other than toroids or other circle based coil technology (in books) so I could be barking up the wrong tree but it makes some sense to me that a coil that prevented by geometry of the coil one of the poles from expressing would probably have an interesting physical effect. I note research into such things is rarely done nowadays, at universities etc. they have stripped out all heavy power research departments. There are some amazing videos from the 60's showing the kind of kit they used to have for the students to play with. I like to say (as an engineer) nobody even knows what electricity IS. (they have simplified models of understanding, but few people know much about it beyond the maths of basic forms)