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From Bare Bones to Big Bucks-The Evolution of American Football
By the end of October, baseball fans pack up the party with the
boys of summer, and prepare for the cold months ahead with a
long list of hard-hitting heavyweights ready to take the field
as the Sunday afternoon, Monday night, and holiday...
Golf Exercise Benefits
Golf exercise benefits are many. Golfers have struggled for years with their games and have become very frustrated. I can't tell you how many times I play with golfers who are about to quit the game.
To explain golf exercise benefits to a golfer...
My Office - Behind the Plate
My Office - Behind the Plate I loved catching - I had the whole game in front of me. I could see everything. Placing the fielders was my job. Seeing whether long fly balls were fair or foul. What the pitcher had or lacked, I saw, as well. Did the...
The Perfect Baseball Jacket
All you need to do to make your hubby or son puff up with pride is to give either of them a baseball jacket. Or even both of them, why not? Make certain you pick a baseball jacket that carries the insignia of the baseball team he is cheering for. ...
Total Bases
Total Bases
This statistic fascinates me. For me it shows the difference
between a slugger and a home run hitter. There have been players
that have hit home runs that I do not consider good hitters.
But when they are slugging, they get all...
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In baseball, how does a pitcher throw a curveball?
In baseball, how does a pitcher throw a curveball?
A successful major league batter gets a hit only 30 percent of the time he comes to bat. One of the ways pitchers lower these chances even further is by throwing a curveball. A curveball is a pitch that appears to be moving straight toward home plate but that is actually moving down and to the right or left by several inches. Obviously, a pitch that curves is going to be harder to hit than a fastball that is moving straight.
There are two basic factors involved in creating a curveball:
Proper grip
Air resistance
Any baseball pitch begins with how the pitcher grips the ball. To throw a curveball, a pitcher must hold the baseball between his thumb and his index and middle fingers, with the middle finger resting on the baseball seam. When the pitcher comes through his motion to throw the ball, he snaps his wrist downward as he releases the ball, which gives the ball topspin. If the pitcher throws properly, the back of the his hand will be facing the batter at the end of the motion. The ball will break down and away from a right-handed batter if thrown by a right-handed pitcher.
The spinning action created when the
pitcher releases the ball is the secret behind the curveball. This spinning causes air to flow differently over the top of the ball than it does under the ball. The top of the ball is spinning directly into air and the bottom of the ball is spinning with the air flow. The air under the ball is flowing faster than air on top of the ball creating less pressure, which forces the ball to move down or curve. This imbalance of force is called the Magnus Effect, named for physicist Gustav Magnus, who discovered in 1852 that a spinning object traveling through liquid is forced to move sideways.
Adding to the air pressure exerted on the ball are the 108 red stitches that hold the cover on the ball. Because they are raised, the stitches increase the amount of friction created as the air passes around the ball and places more air pressure on top of the ball. A well thrown curveball can move as much as 17 inches either way. If you've ever seen a batter jump out of the way of a baseball that ends up crossing over the plate, you've seen a good curveball.
About the author:
http://www.a1-baseball-4u.info/
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