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My approach to LSR is much more on the Aero emphasis, due both to how
interesting it is to me, and the success of vehicles I've found do the
homework
and the subsequent advantages they've gained. I've watched this video many
times, really can't get anything practical out of it except for being further
humbled by nature, and hope there's a practical application ,maybe in a vortex
generation device. Enjoy, I hope
Bob W
The attached video is of dolphins playing with silver colored rings which
they have the ability to make under water to play with. It isn't known how
they learn this, or if it's an inbred ability.
As if by magic the dolphin does a quick flip of its head and a silver ring
appears in front of its pointed beak... The ring is a solid, donut shaped
bubble about 2-ft across, yet it doesn't rise to the surface of the water!
It stands upright in the water like a magic doorway to an unseen dimension.
The dolphin then pulls a small silver donut from the larger one. Looking at
the twisting ring for one last time a bite is taken from it, causing the
small ring to collapse into a thousands of tiny bubbles which head upward
towards the water's surface. After a few moments the dolphin creates another
ring to play with. There also seems to be a separate mechanism for producing
small rings, which a dolphin can accomplish by a quick flip of its head.
An explanation of how dolphins make these silver rings is that they are
'air-core vortex rings'. Invisible, spinning vortices in the water are
generated from the tip of a dolphin's dorsal fin when it is moving rapidly
and turning. When dolphins break the line, the ends are drawn together into
a closed ring. The higher velocity fluid around the core of the vortex is at
a lower pressure than the fluid circulating farther away. Air is injected
into the rings via bubbles released from the dolphin's blowhole. The energy
of the water vortex is enough to keep the bubbles from rising for a
reasonably few seconds of play
time.
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**************Psssst...Have you heard the news? There's a new fashion blog,
plus the latest fall trends and hair styles at StyleList.com.
(http://www.stylelist.com/trends?ncid=aolsty00050000000014)
[demime 1.01d removed an attachment of type application/octet-stream which had
a name of BlowingRings.wmv]
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