Champs(13-16) 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). Champs(5-8)and Champs(9-12) ----------------------------------------------------------------+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 : C14 N3 ; C15 N4 and C13 N12 . Send me the parameters of those you like ! -------------------------------------------------------------If you like programming look at the script Champs13 and 14, you can create a lot of champs with it.. --------------------------------------------------------- En français : la suite de Champs(9-12).