Time derivative or spatial derivatives (gradient of a vector? Former is trivial; latter has been the source of unwarranted) confusion. J. W. Gibbs settled the matter long ago. Bad news: the right way involves…
Will share this with a teacher friend in Finland. Thanks
Time derivative or spatial derivatives (gradient of a vector? Former is trivial; latter has been the source of unwarranted) confusion. J. W. Gibbs settled the matter long ago. Bad news: the right way involves…
Will share this with a teacher friend in Finland. Thanks