Plate with sunken swarf + 2 kpl. of bar magnets

MACHINE TRANSLATION (not authorised yet)

Plate (20 x 11 cm) with ferromagnetic filings sunk inside in a special liquid. Since the plate is made of transparent acrylic, help can be presented on the overhead projector for demonstration purposes! Included 2 sets- pairs of bar magnets - larger and smaller (4 pieces in total). Very useful didactic aid for the experience of magnetism (nature and physics) in schools, including observation of magnetic field lines.