Earth Energy – The Entrancing Force With A Thousand Names by John Bigelow

The document discusses using coils and magnets more efficiently. It states that when making small magnets with copper wire, only a small part of the magnets from the copper wire enter the steel or iron. It recommends putting the coil in a steel or iron tube so that the tube becomes magnetized with the opposite polarity of the coil core,...

The document discusses using coils and magnets more efficiently. It states that when making small magnets with copper wire, only a small part of the magnets from the copper wire enter the steel or iron. It recommends putting the coil in a steel or iron tube so that the tube becomes magnetized with the opposite polarity of the coil core, effectively doubling the amount of magnetism obtained.