Magnetic Field Detector

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A sheet of liquid crystals align in a magnetic field and show the highest intensity magnetic field as dark green.  This material is used to identify the location of poles on a magnet.  The magnetic field lines go from the north pole to the south pole of the magnet.
A sheet of liquid crystals align in a magnetic field and show the highest intensity magnetic field as dark green. This material is used to identify the location of poles on a magnet. The magnetic field lines go from the north pole to the south pole of the magnet.
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