Electromagnetism is a fundamental force of nature that underlies many aspects of modern technology. It is described by Maxwell’s equations, which relate electric and magnetic fields to the sources that create them.

Electric fields are created by electric charges, such as electrons or protons, which can be positive or negative. These fields can exert forces on other charges, causing them to move or repel. Magnetic fields are created by moving charges, such as electrons in a wire or rotating atoms in a magnet. These fields can also exert forces on other magnets or moving charges.

Electromagnetic waves, such as radio waves, microwaves, and light, are a form of energy that propagate through space and can carry information. They are a result of the interaction between electric and magnetic fields, as described by Maxwell’s equations.

The principles of electromagnetism are used in many devices, such as motors, generators, transformers, and electronic circuits. Understanding electromagnetism is crucial to many areas of modern technology and scientific research.