flux density

Flux density refers to the amount of a physical quantity, such as magnetic or electric field, passing through a specific area over a given time. Imagine it as the intensity or concentration of a field in a particular region. For example, magnetic flux density measures how strong the magnetic field is at a point, usually expressed in units like teslas (T). It's akin to how sunlight’s brightness varies depending on where you stand. Higher flux density means a more intense field in that area. It's an important concept in understanding how fields interact with objects and influence their behavior.