On Sat, 24 Aug 2019 at 09:46, C. Abney wrote: > I was going to mention something about the horse being assumed as both > spherical and perfectly elastic. > > This IS physics after all, not chemistry. > > Many real horses would fit withing the spherical bubble size that i > assumed. And, if we can persuade them to emulate water-boatmen, which trap and mold gas bubbles, a degree of bubble distortion seems reasonable. Though, breathing Methane is probably not going to be popular. Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .