A new method using a wetting agent in addition to a water-based magnetic ink allows domain observations of coated Si-Fe sheets without applying a normal field. No electrical apparatus whatever is needed to produce line, spike, tree, and other patterns on conventional g.o. or HI-B sheets of arbitrary size and shape.
No takes yet. Share an insight, caveat, or question.
Helmut Pfützner (1981) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: