Science kits aren't what they used to be. If you look at a kit from, say, 1950, you may notice that it is full of complex, mechanical parts, requires adult supervision just to read the directions and ...
Horseshoe-shaped electromagnet used by James Joule, c.1840. This electromagnet was used by the scientist James Joule for experiments about energy. Joule was a Salford resident and the son of a brewer.
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