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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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#1
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On the sports bulletin on BBC News24 a few minutes ago the presenter
said that Paul Collingwood had been added to the England cricket squad a couple of days ago in case the Edgbaston wicket remained wet after the recent tornado! Norman. (delete "thisbit" twice to e-mail) -- Norman Lynagh Weather Consultancy Chalfont St Giles 85m a.s.l. England |
#2
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On Wed, 3 Aug 2005 15:51:56 +0100, Norman Lynagh
wrote: On the sports bulletin on BBC News24 a few minutes ago the presenter said that Paul Collingwood had been added to the England cricket squad a couple of days ago in case the Edgbaston wicket remained wet after the recent tornado! So many cricket/weather myths. The much missed radio team of Johnson, Arlot, Blowers used to make me laugh by insisting that high cloud was less likely to produce prolonged rain than low cloud. Also the complete unscientific nonsense about cloud cover and humidity affecting whether the ball would swing (move in the air). Martin Norman. (delete "thisbit" twice to e-mail) |
#3
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It may be unscientific, but it does happen, regularly, you just have to
like cricket to notice it. I have been interested in this for many years, wondering if vapour pressure was the culprit, but vapour pressure can be high on a summers day with a high dewpoint but no low cloud and the ball doesn't swing at all. However, on a cool morning with low stratus the ball will move in the air until the stratus burns off and then not swing for the rest of the day. The Australia-Bangladesh odi at Sophia Gardens was a superb example of this. I have to admit that I am stumped, for an explanation. |
#4
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Felly sgrifennodd :
It may be unscientific, but it does happen, regularly, you just have to like cricket to notice it. It's not necessarily unscientific, it's just that science hasn't explained it yet. There's a scientific explanation of swing at http://www.soest.hawaii.edu/GG/STUDE...ter/swing.html where the author concedes that: blockquote Despite being widely observed in practice, there is currently no theoretical, or experimental, evidence for humidity having any affect on the amount of swing. /blockquote (note the first six words). It will be explained, eventually. Adrian -- Adrian Shaw ais@ Adran Cyfrifiadureg, Prifysgol Cymru, aber. Aberystwyth, Ceredigion, Cymru ac. http://users.aber.ac.uk/ais uk |
#5
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![]() wrote in message ups.com... | It may be unscientific, but it does happen, regularly, you just have to | like cricket to notice it. | | I have been interested in this for many years, wondering if vapour | pressure was the culprit, but vapour pressure can be high on a summers | day with a high dewpoint but no low cloud and the ball doesn't swing at | all. However, on a cool morning with low stratus the ball will move in | the air until the stratus burns off and then not swing for the rest of | the day. | The Australia-Bangladesh odi at Sophia Gardens was a superb example of | this. | | I have to admit that I am stumped, for an explanation. | As one who follows the coverage on Channel 5, I can report it happens in baseball as well, but here it seems to mostly affect the ball after it has left the bat - there being some ballparks where the local conditions seem to enable the ball to be hit vast distances while others seem to result in similar hits being caught inside the park. The stadium where Toronto Blue Jays play has had the embarrassment of staging "weather delays" in spite of having an overall roof (which takes 20 minutes to close), because they don't like to close it if at all avoidable as it is claimed having the roof closed affects how the ball flies. And some of the smaller indoor stadia with air conditioning used to rouse suspicion that the settings were adjusted depending on whether the home team were batting or fielding, although the wave of new ballparks has resulted in most, if not all, of these now having been replaced. As for what effect humidity has, the balls the sports in question use are capable of absorbing water and this affects the nature of the ball's surface. I would suspect that this change affects the airflow over the moving ball (remembering that to "swing" a cricket ball normally requires the surfaces either side of the seam to be of different roughnesses which is why the bowlers polish one side; or to spin the ball rapidly which is how a baseball pitcher throws a "curve") in such a way as to make it more sensitive to the processes which cause the ball to swing in the first place, which from articles I have read relate to how the flow "separates" and "rejoins" on passing round the ball. -- - Yokel - oo oo OOO OOO OO 0 OO ) ( I ) ( ) ( /\ ) ( "Yokel" now posts via a spam-trap account. Replace my alias with stevejudd to reply. |
#6
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The tornado apparently missed Edgbaston by only about a mile so
presumably, the cricket ground suffered very heavy rain from the cunim responsible for the tornado. But I do agree that cricket commentators often take the most ridiculous drivel when they "knowledgeably" comment on the weather. Jack |
#7
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#8
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Norman Lynagh wrote:
On the sports bulletin on BBC News24 a few minutes ago the presenter said that Paul Collingwood had been added to the England cricket squad a couple of days ago in case the Edgbaston wicket remained wet after the recent tornado! Norman. (delete "thisbit" twice to e-mail) A decent Oklahoma-stylee F5 would have removed the turf - preserving us from the interminable boredom of the match - or at least providing a surface to challenge the ozzies ![]() -- Chris (not a cricket fan) http://www.ivy-house.net Swaffham, Norfolk |
#9
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"Chris" wrote in message
Might: the interminable boredom of the match be something to do with the fact you English always lose to the Aussies? Yes: - or at least providing a surface to challenge the ozzies ![]() It sounds likely. Nobody ever watches cricket unless the Brits are winning. Do they? -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG |
#10
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Michael Mcneil wrote:
be something to do with the fact you English always lose to the Aussies? Having worked in Oz a few times with a sister company to the one I work for, I've realised why the Aussies are so good at sport. They don't do much else! Right from early school age, they have sport "colleges" and "clubs" - and when they get to work, they roll up at about 10am after a jog/gym session and bugger off from work at 3:30ish, via the pool or cricket club. -- Chris http://www.ivy-house.net Swaffham, Norfolk |
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