Tuesday, December 14, 2010

Weather forecasting and Unpredictability

Ever wondered why whether forecasting is not accurate even with most modern super computers? . Read the paragraphs below..

Suppose that if a variable Y depends only on X , then we can say with that if X changes then Y will also change .

Eg:

Y=m X+ C --> Equation for a stright line

if we consider m and C as a constant, then Y varies linearly with X.

But what about Y with different m and C at different points? Clearly the value of Y is different form point to point.

This is what exactly the problem with weather predictions. There are different variable parameters (like m and C) which might change form point to point and from time to time. This will make the weather prediction difficult simply because by the time we calculated the values of Y based on the parameter values by using a super computer, its value might already have been changed by a lot of other environmental parameters. So the result may not be valid after a certain passage of time.

Because of this problem, even with the most modern super computers weather prediction beyond 7 -8 days is always going to be challenging task.

Conclusion: Don't blame meteorologists for the forecasting accuracy problem, as god loves uncertainty..

Thursday, November 18, 2010

Why Swing Bowling is nightmare for every Batsman in Cricket?

It is a fact that even the most experienced, most technically sound batsman will fall under the trap of good swing bowling especially late swing..

Ever wondered why it is like that?. Please see the paragraphs below..

Usually every batsman moves the bat (or the body for that matter) based on the bowler action. So when the bowler releases the ball , batsman expects a certain trajectory in his mind for the cricket ball. But in the case of swing bowling, the ball deviates from the actual trajectory. By the time ball started deviating from the actual trajectory , it might have already traveled more than half the way, which will make every batsman bard to respond to the ball's sideways movement. Worst is the case of late swing as well as reverse swing as the batsman may not get time at all to respond.

The bottom line is : If any Cricket batsman fall under the trap of good late swing or reverse swing bowling, there is no point in blaming him, as god had created every human being with this lacuna..

Hope the matter is clear or lets discuss it here..