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Originally posted by waveguide3
It looks like a smoke ring generated by one of those fairground contraptions. Do a search for 'smoke rings' on YouTube and you'll find lots of examples just like this.
Originally posted by Ansiroth
hmmm, doesnt look like a smoke ring to me. Iv'e blown lots of smoke rings in my life and for something to emit a smoke ring that large i'd almost speculate that whatever created it might as well have been designed to blow it out intentionally.
If it's a smoke ring, its probably the greatest smoke ring ever, to float up that high and not fall apart.
EDIT: It says in a news report that the ring was from the Volcano Mountain rollercoaster, that closes it for me.
[edit on 15-6-2009 by Ansiroth]
If these rings are supposedly caused by a fireworks show, why is there no point of origin for the show? Doesen't law enforcement in that county usually have some kind of knowledge or a heads up prior to a fireworworks show provided by sponsers? One more thing, these "fireworks" rings were spotted in San Antonio, Texas a few years ago, same show I wonder!!?????
"If you're going to be crazy, you have to get paid for it or else you're going to be locked up." - Hunter S. Thompson
I expect that a 50ft smoke ring would have a very long lifetime. If launched upwards, the warm air would carry it much higher than the launcher would otherwise throw it. The ring-shaped cloud would be seen for miles. Maybe it would reach the stratosphere and form a genuine cloud. It'd look very strange on a cloudless day.
Instead, were rewarded by other spectacular sights, and some incredible «steam rings» from Bocca Nuova. Normally, this phenomen is referred to as «smoke ring». However, as there was hardly any ash, but a high steam content, we call it «steam ring». Some lasted for up to 10mins (times documented by video recordings). To give a sense of the perspective, camera lens focal lengths are given.
They undoubtedly rank amongst the most eccentric sky phenomena on the planet: the metres-wide rings of vapour or smoke that can be seen floating through the air on occasion.
The physics behind these "vortex rings" is very complex. Moreover, vortex rings do not always form in the same way. In most instances, the rings are formed by air mixed with smoke or steam that is forced out of a (relatively) small circular or cylindrical opening (this can be a chimney, the barrel of a canon, or a vent in a volcano crater). Because of the drag of the surface of the opening, the air expelled from the centre will move faster than the air exiting the opening near the edge. The air from the sides is sucked in, and a circular motion is created. In this way, a doughnut-shaped vortex is formed, just like a smoke ring that is blown from a smoker's lips. The ring-shape is maintained due to the rotational motion of the air flowing in the vortex ring.