Discussion on “decomposing magnetic fields into their higher harmonics” (Weichsel), St. Louis, Mo., October 20, 1915. (see proceedings for October, 1915)

George R. Dean: For some time I have been resolving magnetic fields into their higher harmonics, and wished for some convenient process. All this time I have been using the general procedure which involves a lot of integration, the combining of all kinds of hard integrals, I got my results all right, but now I am checking them up by Mr. Weichsel's method. Of course, these field waves as you call them, are to some extent a guess, their shape is not anything like as simple as one would think from the figures, but they come pretty close to being rectangles, trapezoidals, etc. One very interesting thing which I have been doing is to try to predetermine the harmonics in the current and field waves of alternators, transformers, motors, etc. And in order to get at the thing at all I have to decompose these magnetic fields.