Gilbert's experiment to demonstrate that two pieces of iron wire, A,B, placed near the pole, C, of a magnet, will have the same magnetism induced in them and so repel one another. From William Gilbert 'De Magnete', London, 1600.
Gilbert's experiment to demonstrate that two pieces of iron wire, A,B, placed near the pole, C, of a magnet, will have the same magnetism induced in them and so repel one another. From William Gilbert 'De Magnete', London, 1600