File talk:Line-Integral.gif

This animation should be corrected

This animation was crafted to show the principle of forward integration of a trajectory on a vectorial field. The problem is that the trajectory in blue does not follow the green field, specifically in the second half. For instance, at the moment where its ordinate is minimal, its velocity vector is "horizontal" (along the abscissa direction), but this happens in a region where the green vector field imposes this velocity to be roughly "vertical" (parallel to the ordinate direction) ! This animation has a fine look & feel, and it would be a real pedagogic plus to have a mathematically coherent solution. --Éric Lewin (t), Grenoble (France) 00:28, 9 September 2015 (UTC)
Addition a few hours later : this page has been duplicated here, commons:File:Line-Integral.gif, which means one instance is redundant and maybe should be deleted, plus links be relinked with the other. Though the instance from ":en:" seems the source (cf. comment on :commons:), i think that the :commons: version which is much more linked, be kept, and the :en: version be deleted. What do you think ?. Somehow (i don't know how), the two seemingly avatar pages are tighly linked, though not their comments. Therefore, I'm gonna copy my above comment in the :common: talk page… --Éric Lewin (t), Grenoble (France) 07:44, 10 September 2015 (UTC)--