Dictionary / Visualization
Field Isosurface
VisualizationA 3D boundary surface that traces every point in space where the magnetic field reaches a chosen strength. The 3D field view stacks several of these surfaces inside one another, each one marking where the field stays at or above a set fraction of the surface peak, with a 5 Gauss shell as the practical outer edge. The outer shells are the largest and show how far the field reaches. The inner shells are smaller and show where the field is strongest, close to the coil. Technically, an isosurface is the set of points where the field magnitude equals the threshold value, and for a rotationally symmetric coil it is the matching side-view line revolved a full turn around the coil's axis.