UNIVERSE | SCIENCE | TECHNOLOGY on Instagram: "You can’t see magnetic fields… until this 😮 That black powder is iron filings. When a magnet is placed nearby, each tiny piece aligns itself with the invisible magnetic field. 🧲 Lines form from north to south ⚡ Stronger areas = denser lines 🧠 This is how magnets “talk” to matter without touching it Every compass, motor, speaker, and electric generator works because of this invisible force. Magnetism is real magic — backed by physics. . . . . . .