StevenXClontz’s Twitter Archive—№ 2,199

…in reply to @siwelwerd
@siwelwerd Flow/work is defined as ∫F·Tds=∫F·dr, so nat defn for flux is ∫F·Nds=∫F/κ·dT. But this measures *inward*! 1/n
Permalink On twitter.com 2017 Jul 12 Mood 0

…in reply to @StevenXClontz
@siwelwerd So who's the jerk that defined flux as ∫F·nds, where n gives the *outward* unit normals? 2/2
Permalink On twitter.com 2017 Jul 12 Mood -3 🙁

…in reply to @StevenXClontz
@siwelwerd Also flux= ∫Ndx-Mdy would have nice symmetry with curl·k=N_x-M_y. 3/3
Permalink On twitter.com 2017 Jul 12 Mood +3 🙂

…in reply to @StevenXClontz
@siwelwerd Yeah, weak rant. I do prefer orienting my surfaces with outward unit vectors and orienting my planar regions with k, so it's not all bad.
On twitter.com 2017 Jul 12 Mood -7 🙁