Patent number 2,855,714 has a good description on how the vortex
forms......The mechanics of forming smoke rings are well understood and are
explained in numerous texts on physics and fluid dynamics. The manner
which smoke rings are formed by the present toy gun may be briefly
explained as follows. Sudden forward movement of the disc or plunger
initially compresses the smoke/air immeadiately in front of the plunger and
produces an wave front which moves twoard the exit orifice. Upon the wave
front reaching the oriface, the new compressed smoke/air in the casing
issues thru the oriface in a forming of a puff. The forward surface
seperating the moving mass of compressesd smoke/air behind the wave front
from the realitivly still air ahead of the wave front is commonly referred
to as the "surface of discontinuity". When this surface of discontinuity
reaches the oriface, it is, in effect, rolled up by the circular edge(of
the oriface)there,(Coanda Effect),of to form a vortex ring which is
propagated outwardly through the oriface to form a smoke ring......
Terry Bastian
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Knowledge is the Perfection of FAITH....
Come! walk the path and take upon yourself the Quest for True Knowledge..
For Life is what happens when your planning other things....
Come and visit.....
Etherian Dream Weavers Place....
Where the mind dares to wander and one's future is not written in stone..
http://home.dmv.com/~tbastian
there once was a fellow named Bastian
whose manner was at times exasperin'**
when queried by friends "why?"
he'd reply on the sly;
"if I weren't, you'd need lots more aspirin"
** as in exasperating
-B.K.Downing'1997'-