You draw virtual magnets and Pic2Mag draws the fields!(tm)
Pic2Mag 640x640 is a free program that uses colors to represent magnetic materials.
Based on magnetic moments it calculates the vector fields, isopotential contours, and streamlines.
Download Main PC Version - Pic2Mag v1.3 (1.4 meg)
Download Ubuntu Version - Pic2Mag v1.3 (0.5 meg)
Download Beta - PC & Ubuntu - Pic2Mag v1.7 (1.0 meg)
Download - Self Assembly v1.03 (1.3 meg)
Download - Magnetic Pictures v1.03 (8.3 meg)
All of Pic2Mag's 1280x1280 versions are priced at $19.95 and can be licensed to teachers for all their students.
For example, Miss Smith's 3rd Grade Class could own a copy of Magnetic Pictures for $19.95
Email firstname.lastname@example.org for orders and support. I will send you a PayPal invoice and a download link for your software.