For most of history, electricity and magnetism seemed like different things. Lightning and lodestones weren’t obviously related. Then in the 1800s, scientists like Hans Christian Ørsted, Michael Faraday, and James Clerk Maxwell discovered something incredible: they’re really the same force, just showing up in different ways.
When electric charges move, they create a magnetic field. When a magnetic field moves, it creates an electric current. The two are completely tangled together, and physicists now call them a single force: electromagnetism.
This discovery built modern civilization. Every electric motor - in cars, fans, washing machines - converts electric current into magnetism, which moves the motor. Every generator - at hydroelectric dams, in your car alternator - does the reverse: moving magnets create electric current. Speakers turn varying electrical signals into vibrating magnetism. Microphones do the reverse. Radio waves are electromagnetic. Wi-Fi is electromagnetic. Light itself is an electromagnetic wave. Almost every piece of modern technology runs on the dance between electricity and magnetism.
