Scalar Field

A scalar field is a function that assigns a single number to every point in some region of space, whether that number is a plain mathematical quantity or a physical quantity carrying units. In physics, a scalar field must be independent of the observer's frame of reference, so that any two observers using the same units agree on its value at a given point in space. Common examples include the temperature at every point in a room, the pressure at every point in a fluid, and quantum fields such as the Higgs field, which represents a spin zero particle in quantum field theory. Scalar fields are a basic tool for describing everything from classical potential energy to modern particle physics. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/