Accessed 24 November 2025. Field, in physics, a region in which each point has a physical quantity associated with it. The quantity could be a number, as in the case of a scalar field such as the Higgs field, or it could be a vector, as in the case of fields such as the gravitational field, which are associated with a force.

Gravitational, electric, and magnetic fields are all examples of vector fields. We often call them just fields for short, as we care about vector fields more often than scalar fields in introductory physics. These fields can show us regions of space in which a mass or a charge within this space experiences a non-contact force.

Field theories, mathematical descriptions of how field values change in space and time, are ubiquitous in physics. For instance, the electric field is another rank-1 tensor field, while electrodynamics can be formulated in terms of two interacting vector fields at each point in spacetime, or as a single-rank 2-tensor field.

What physically makes up the fields are trillions and trillions of individual photons. field is physical quantity, I really like that definition from Wiki. just like mass is physical quantity, so is the field (of some type).