EMI Field Explorer (free)

Electro-magnetic field visualizer for a few configurations of wire strips.

This applications visualizes electro-magnetic fields that are radiated by wire strips driven by a current. You can choose between several configurations like rectangluar or single cable wire. Some of the dimensions of the configuration can be changed using sliders. A 3D-visualisation using OpenGL ES2.0 shows the field lines radiated by the chosen configuration.