Archived posting to the Leica Users Group, 2010/03/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi Bob, Nice link. The same sort of phenomena can happen on a smaller scale, as well. The USAF installed 200-ft exhaust stacks at Arnold Center when we were testing rockets for NASA, because of the nature of the exhaust products. Strong winds caused the stacks to sway from side to side as vortices were shed alternately as the wind blew past the stacks. This condition was corrected by the addition of spoiler plates on the stacks to break up the flow. Since that time, I have been concious of this problem, and I have observed the corrective measures on a number of other stacks that I have seen. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Bob Adler" <rgacpa at yahoo.com> To: "Leica Users Group" <lug at leica-users.org> Sent: Thursday, March 04, 2010 10:28 PM Subject: [Leica] OT: Worldly Photos > To paraphrase, give me a place to put my tripod legs, and I'll photograph > the world: > http://tinyurl.com/y99lljd > > Bob Adler > Palo Alto, CA > http://www.rgaphoto.com > > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >