Economy Hope's Apparatus Electricity & Magnetism_Circuits and flagellum and flagellum Five color coded ceramic ring magnets at 46mm diameter mount on a 15cm wooden dowel Economy Hope's apparatus demonstrating the anomalous expansion of water near 4°C as thermometers at different heights register densest water sinking while colder water rises
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Economy Hope's Apparatus Electricity & Magnetism_Circuits and flagellum