When a rapidly changing magnetic field passes through a conductive metal (like aluminum), it induces circulating electrical loops called eddy currents. By Lenz’s Law, those currents create their own magnetic field that opposes the original field—resulting in a repulsive force. Recycling facilities use this physics to separate non-ferrous metals (aluminum, copper) from mixed waste streams: 1️⃣ Waste moves along a conveyor belt. 2️⃣ At the end, it passes over a high-speed rotating magnetic rotor (inside a non-magnetic shell). 3️⃣ The changing magnetic field induces eddy currents in conductive metals. 4️⃣ Those metals experience a repulsive force and are literally “thrown” forward into a separate collection bin. 5️⃣ Non-conductive materials (plastic, glass) fall normally. No chemicals. No contact sorting. Just applied electromagnetism. Why it works: • The induced current density depends on electrical conductivity, magnetic field strength, and relative velocity. • Aluminum responds s...