Dictionary / Visualization
Field Volume
VisualizationThe three-dimensional region around the accessory where the magnetic field strength exceeds a chosen threshold. It's visualized as a dome-shaped solid revolved around the coil's central axis. The report's 3D Field Volume chart per setting shows this dome with the accessory's outer diameter (and loop inner diameter, when applicable) drawn as reference rings on the base. This lets you compare the field's reach directly to the physical coil footprint. The dome's height shows how deep the field penetrates. Its width shows how far it spreads laterally. For loop coils, the on-axis field at the central axis drops below threshold before the field at the winding ring does. This creates a crater in the dome's top, reflecting the donut shape of the field.