Champs(9-12) Imagine, a magnetic field (champ magnétique in french) and magnetized needles. Imagine a field (un champ) and squalls of wind. Imagine a brook and whirlwinds. Imagine, last but not least, the differantial equations... For others champs : Look at Champs (1-4).and Champs(5-8) ----------------------------------------------------------------+Use the slider bar to change the champs+Use the slider bar to change the needles. And press on the green flag ...----------------------------------------------------------------Those i prefer : C10 N7 ; C9 N16 ; C11 N3 and C12 N6 . Send me the parameters of those you like ! -------------------------------- Suite de Champs(5-8), je prépare Champs(13-16)