field

A field is a way to describe how something, like a force or energy, is spread out across space. Imagine it as a map that assigns a specific value—such as a direction, strength, or type—to every point in a region. For example, a magnetic field around a magnet shows how magnetic forces reach out and influence objects nearby. Fields help us understand how forces like gravity, magnetism, or electricity operate over distances, even when no physical object is present at a point. They are fundamental concepts in physics for describing interactions that happen across space.