On Mon, 20 May 2013 02:59:45 -0700 (PDT)
Offramp <
alane...@gmail.com> wrote:
> What baffles me is when scientists say - and I've read these reports
> roughly quinquennially - that atmosphere can have little or no effect
> on the movement of a cricket ball through the air!
The last report I heard about suggested that there could be a link
between swing and cloudiness: On a sunny day, the heating of the ground
and consequent convection currents leads to turbulence which reduces
the chance of smooth airflow over the surface of the ball; on a cloudy
day, there are no such convection currents to disturb the flow.
I don't know how much scientists understand about the swing of a
cricket ball but, on the evidence of comments they have made, I'm
fairly sure that commentators don't have a clue and haven't done for a
long time.
When I was about 12 years old, back in the 1950s, I was listening to a
commentary on the radio and the commentators agreed that, as the old
ball was swinging prodigiously, they should take the new ball as soon
as it was available. I shouted back at the radio that they should do no
such thing as the new ball wouldn't swing at all. The new ball was
taken once the 90 overs were up and, of course, it went gun-barrel
straight. What they didn't realise was that it was the roughness of the
ball that was causing it to swing; I'd only just seen evidence for this
when throwing a table-tennis ball that had become cracked.
The latest nonsense I keep hearing from commentators is that Malinga
gets reverse swing in the later overs of a T20 match. If they actually
bothered to look at how he delivers the ball in the early overs and
the different action in the latter overs they'd see that the swing is
not due to the ball 'reversing.' It's not just me that says that
Malinga doesn't bowl reverse swing, he says it as well.
As commentators are mostly retired cricketers, it's probably fair to
say that most cricketers don't have a clue about what causes normal
swing and so-called reverse swing.
--
Graham P Davis, Bracknell, Berks.
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Carlos Seixas, Sonata nº 1 - best version of this I've found:
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