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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#11
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On Tue, 20 Sep 2005 00:18:28 +0200, "Colin Youngs"
wrote: http://www.vwkweb.nl/foto/2005/09bolbliksemgroot.jpg Photo posted on the discussion forum of the Dutch amateur observers' association VWK Discussion on the forum as to whether or not it is genuine. Taken at 15.19 local time on Saturday 10th September in Rijswijk near The Hague in the Netherlands. Colin Youngs Brussels The "blue falling object" looks like a piece of modern sculpture, common on continental streets. The red/yellow light is a shop neon sign. The bright white circular artifact is either a refection of the camera flash - you can just make out another (linear) reflection on the nearest lamp-post - in a car or shop window, or a high voltage cable flashing over to the lamp standard. Not ball lightning IMVHO but I still believe it occurs, possibly as a volume of ionised air - a bit like St Elmo's fire or corona discharge that has become detached somehow. Martin |
#12
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Many thanks for that explanation. It certainly looks from the streakiness in
the image that it was taken from behind glass, but it appears that I could be mistaken. It does highlight, however, that details of where and how a photograph is taken are important, e.g. location, time, exposure, when trying to identify anything out of the ordinary. -- Bernard Burton Wokingham, Berkshire, UK. Satellite images at: www.btinternet.com/~wokingham.weather/wwp.html "Derecho" wrote in message vices.nl... The picture was not taken behind glass or plastic, the phenomenon was just this bright. In fact, "the ball of light" wasn't even moving, but followed a nearby strike and was attached to a light pole with power lines for a tram. I think it isn't a "genuine ball lightning", but some sort of burning of material (Magnesium?) from this pole or power line. For those of you who understand Dutch a bit, follow the discussion on this forum: http://forum.vwkweb.nl/viewtopic.php?t=2925 Bernard "Bernard Burton" schreef in bericht ... I agree with the posts that attribute the bright patch to reflection in glass or plastic. From streakiness visible in the image, it is obvious that the exposure was made behind glass or transparent plastic, and reflection of flash or some other light source behind the camera is the most likely explanation. -- Bernard Burton Wokingham, Berkshire, UK. Satellite images at: www.btinternet.com/~wokingham.weather/wwp.html "Colin Youngs" wrote in message ... http://www.vwkweb.nl/foto/2005/09bolbliksemgroot.jpg Photo posted on the discussion forum of the Dutch amateur observers' association VWK Discussion on the forum as to whether or not it is genuine. Taken at 15.19 local time on Saturday 10th September in Rijswijk near The Hague in the Netherlands. Colin Youngs Brussels |
#13
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On Tue, 20 Sep 2005 11:46:19 +0200, "Derecho"
wrote: The picture was not taken behind glass or plastic, the phenomenon was just this bright. In fact, "the ball of light" wasn't even moving, but followed a nearby strike and was attached to a light pole with power lines for a tram. I think it isn't a "genuine ball lightning", but some sort of burning of material (Magnesium?) from this pole or power line. For those of you who understand Dutch a bit, follow the discussion on this forum: http://forum.vwkweb.nl/viewtopic.php?t=2925 Hmmm... the "orb" sounds like some variant of St Elmo's Fire then. Not ball lightning anyway, I'd say it's far - too bright, tight and and compact dor that. Ball lightning usually floats free in the open air and earths out on contact with physical objects... St Elmo's Fire is attached to physical objects (but I've only seen ball lightning, not St Elmo's) -- Dave |
#14
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looks like the ball lightening i saw many years ago
"Dave Ludlow" wrote in message ... On Tue, 20 Sep 2005 11:46:19 +0200, "Derecho" wrote: The picture was not taken behind glass or plastic, the phenomenon was just this bright. In fact, "the ball of light" wasn't even moving, but followed a nearby strike and was attached to a light pole with power lines for a tram. I think it isn't a "genuine ball lightning", but some sort of burning of material (Magnesium?) from this pole or power line. For those of you who understand Dutch a bit, follow the discussion on this forum: http://forum.vwkweb.nl/viewtopic.php?t=2925 Hmmm... the "orb" sounds like some variant of St Elmo's Fire then. Not ball lightning anyway, I'd say it's far - too bright, tight and and compact dor that. Ball lightning usually floats free in the open air and earths out on contact with physical objects... St Elmo's Fire is attached to physical objects (but I've only seen ball lightning, not St Elmo's) -- Dave |
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