| 摘要 |
<p>The invention relates to a method for recording the electromagnetic field gradient. According to the invention, the method consists in depositing, on the surface of a workpiece (), a glossy shield () made of hostophan, then on the thus formed surface there is deposited a layer () of ferromagnetic particles by electromagnetic screening, said layer () being subjected to the action of an external magnetic field produced by a DC supplied electromagnet () which orientates the ferromagnetic particles on the direction of the lines of force, said lines being immobilized in these positions by means of a fast drying hair fixative lacquer (), atomized from a certain distance, by means of a spray atomizer ().</p> |
