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The tiny sliver of the spectrum that human eyes can detect.
Every electron is a tiny magnet. In most materials, they point randomly (cancel out). In iron, they line up. That’s a permanent magnet. electromagnetism for dummies pdf updated
When electric and magnetic fields wiggle back and forth, they create a wave that travels at the (300,000 km/s). This is electromagnetic radiation .
If you are reading this on a screen, electromagnetism is propelling electrons through the wires, lighting up the pixels on your monitor, and transmitting the Wi-Fi signal to your device. It is literally the force that holds your body together (atoms are held together by electromagnetic forces). This public link is valid for 7 days
A moving electric field creates a magnetic field, and a changing magnetic field creates an electric field. This "dance" between the two allows for everything from your smartphone to the sun's light. Core Principles You Should Know
We have all played with refrigerator magnets, but what makes them stick? Magnetism is a force that arises from the spin and orbital motion of electrons. Can’t copy the link right now
Everything starts with electric charge, a fundamental property of matter.