On 2010-09-09 14:58, Larry Colen wrote:
These guys had a cool machine for making smoke rings. And while it's rather impressive to see a smoke ring several meters across blowing in the breeze, watching them make it is even more fun:
The army and navy have a bunch of them, but they throw a projectile along with the smoke ring. The biggest smoke ring I've ever seen must have been 20m or more across before it broke up, from the 16" (~400mm) main guns on a battleship.
-- Thanks, DougF (KG4LMZ) -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
