From: Michael Tarbell <mtarbell.nul> Date: Tue, 09 Aug 2011 11:14:20 -0600 Archived: Wed, 10 Aug 2011 05:55:44 -0400 Subject: Re: Report From Lumberton NJ Witness 07-30-11 >From: Martin Shough <parcellular.nul> >To: <post.nul> >Date: Mon, 8 Aug 2011 14:54:08 +0100 >Subject: Re: Report From Lumberton NJ Witness 07-30-11 >>From: Gerald O'Connell <goc.nul> >>To: post.nul >>Date: Mon, 8 Aug 2011 00:20:08 +0100 >>Subject: Re: Report From Lumberton NJ Witness 07-30-11 >>- A breeze not strong enough to turn a weather vane is imparting >>(or playing some part in imparting) rotation to the object. >>Certainly not impossible, but perhaps rather improbable? >Well, I suppose that means that some rotation - a slow spin, or >perhaps even just an oscillation - is possible? The dynamics of >the effects of a heat source in a paper balloon aren't too clear >to me - maybe someone has experiments - but I doubt the >resultant force would have to be perfectly symmetrical. >Howsoever, we aren't told anything about the type and rapidity >and duration of this reported rotation, and we can't know how >reliably-observed and free of illusion it was, bearing in mind >the circumstances (ex hypothesi, a small, greyish moving object >of unfamiliar construction hundreds of feet away being >illuminated by a handheld spotlight). Hi Gerald, Martin, at al: In my opinion the rotation of a passive buoyant object (e.g., a Chinese lantern) would be driven by aerodynamic drag rather than, say, asymmetric heating effects. I suppose that by incorporating suitably oriented vents to expel internal warm air, some rotational torque could be induced in pinwheel-like fashion, but again I think the effect would be negligible except in an absolutely static atmosphere. At first glance, it would seem that once the object comes to rest with respect to the mean velocity of the surrounding air, there should be little or no net rotation thereafter. However, if the air flow itself is rotational or shearing, then steady rotation could presumably be induced even if the object is symmetric. Thus intrigued, I spent some time this morning observing various floating objects in the nearby irrigation canal (not a perfect analog, but incorporating many of the same effects as the airborne case). At any given moment, virtually every object was displaying at least some rate of rotation. However, only a small fraction were in anything like _steady_ rotation, that is, no visibly apparent change in rotation rate over the duration of observation (typically ~5 seconds). All others were clearly accelerating or decelerating, even reversing, in sporadic fashion. From which I derive nothing of much significance, except perhaps the suggestion that an airborne object that is rotating at a uniform rate over long time scales is _probably_ doing so autonomously rather than as a result of aerodynamic loading. But as Martin has pointed out, the witness's description of the rotation is too sparse and generic for it to serve as any kind of filter. Taking the sighting as a whole, pending additional details I must sympathize with the "it walks like a lantern, swims like a lantern, and quacks like a lantern" camp. Effective investigation requires triage, and increasingly _severe_ triage as our culture becomes more UFO/ET saturated. Mike Listen to 'Strange Days... Indeed' - The PodCast At: http://www.virtuallystrange.net/ufo/sdi/program/ These contents above are copyright of the author and UFO UpDates - Toronto. They may not be reproduced without the express permission of both parties and are intended for educational use only.
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