English: On the top of the magnet glass plate is placed. The iron filings arrange along the field lines. Do not forget that the magnetic field is not located only in the plane of the glass where the iron filings are, but it is three-dimensional. If the picture is rotated around the axis along the magnet, then the real three-dimensional picture of the field would be obtained. Prepared, performed and exlained by Prof. Oliver Zajkov at the Physics Institute at the Ss. Cyril and Methodius University of Skopje, Macedonia.