Description
xPlastic frame with transparent window containing magnetic powder in a water-based solution for showing magnetic field patterns. When a magnet is present, the particles of iron inside become slightly magnetised, so they attract each other and cluster into the lines that show the magnetic field patterns. Includes a pair of small ferrite block magnets, a pair of plastic-cased bar magnets and activity guide.
Size: 225 x 130 x 15mm.
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