No such thing as fair weather for swing - Science disagrees with Cricket followers

[rkt.india]

Just now, speedheat said:

Kookaburra balls, kookaburra balls offers low seam which only lasts for 20-25 over 

Anderson also tries to bowl quick there and use seam to its effect.

what about India where we have SG balls very similar to duke? never saw him swung in India as well.  Irrespective of what people say, conditions to do matter.  Same kookaburra ball swings in SA.

[speedheat]

1 hour ago, rkt.india said:

what about India where we have SG balls very similar to duke? never saw him swung in India as well.  Irrespective of what people say, conditions to do matter.  Same kookaburra ball swings in SA.

See the question here is not about Anderson, since pitches here in India and sg ball are conducive to seam more than swing,Anderson tries to bowl quick with straight seam, he doesn't hold it with an angle to make it swing mostly in India, however question remains the same does conditions matter?? Coz I have seen sandip dharma, pk and David Willey etc. bowilg banana swing under hot conditions with only(or mostly) wind assisting it.

Edited August 17, 2018 by speedheat

[Temujin Khaghan]

52 minutes ago, rkt.india said:

1. Anderson does not swing it in India with SG ball.  Even in 2012, most of his wickets were with old ball reversing.

2. Same kookaburra ball swings in SA.

1. sure, In Indian conditions, the shine on the ball wears down quickly... thats why bhuvi regresses from a hissing cobra to a toothless tadpole after his first spell...

2. sa conditions have everything working for fast bowlers. there is tremendous amount of bounce too..

[Temujin Khaghan]

@rkt.india also the low bounce in India is disheartening to fast bowlers. they give up too quickly looking at the impotent bounce in the wickets. 

 

 

Edited August 17, 2018 by Temujin Khaghan

[coffee_rules]

BCCI should use its money power and make all teams use the same brand of balls. SG is the way to go. By not practicing wirh Dukes, we are so not prepared for this series, both in batting and bowling.

[KeyboardWarrior]

may i share something if people dont mind it.

in first video, wasim bowling in almost all foreign conditions.

 

https://www.youtube.com/watch?v=riywHPCyyQs

 

 

 

 

 

 

 

[express bowling]

Let's talk about this test series in England  ... and same English medium pacers bowling with the same Dukes ball with and without the sun shining.

 

So, why have we seen the ball swing more when it is cloudy ... the same Anderson got less swing in the first test whenever there were periods of bright sunshine.

[gattaca]

23 minutes ago, express bowling said:

Let's talk about this test series in England  ... and same English medium pacers bowling with the same Dukes ball with and without the sun shining.

 

So, why have we seen the ball swing more when it is cloudy ... the same Anderson got less swing in the first test whenever there were periods of bright sunshine.

Its humidity and moisture. They call it condensation shock.

 

 

 

"The suggestion is made that the observed increase in the swing under conditions of high humidity is caused by condensation shock. The moisture in the rapidly expanding air close to the ball does not condense when the saturation limit is reached but continues in an unstable, supersaturated state until violent condensation occurs, probably at the lowest pressure attained. This condensation shock assists the seam in upsetting the laminar boundary-layer. Calculations show that this effect can occur only when the relative humidity in the ambient air is nearly 100%."

 

https://www.sciencedirect.com/science/article/pii/0020740376900461

 

Edited August 17, 2018 by gattaca

[Brainfade]

1 hour ago, gattaca said:

Its humidity and moisture. They call it condensation shock.

 

 

 

 

 

Which correlate almost perfectly to morning cloudiness, right?  I don't see how one can separate the humidity / moisture from cloudiness, unless you define cloudiness very loosely (like >30% of the sky covered with clouds). 

[gattaca]

5 hours ago, Brainfade said:

Which correlate almost perfectly to morning cloudiness, right?  I don't see how one can separate the humidity / moisture from cloudiness, unless you define cloudiness very loosely (like >30% of the sky covered with clouds). 

Yes it has to be cloudiness.

[Adi BB]

On 8/17/2018 at 8:00 AM, rkt.india said:

So what makes ball swing?

Bottle caps and zippers 

[Adi BB]

On topic ,Normally when there's moisture in the air ,the packing/molecular density of air becomes thick which causes more resistance to the ball if thrown on the upright seam and this is why we see the ball deviate more in the air than on a normal day