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Hawaii Fishing Tips
The opportunity to be on a boat ready to catch fish, enjoying
the beautiful scenery, and the camaraderie with the crew of the
boat is the best experience in fishing you can find. Here are
some helpful tips to enjoy fishing.
1. Choose a boat...
Kicking Butts: Forget For A Moment All That Stuff About Cancer--That's Tomorrow. Smoking Can Screw Up Your Workout Today!
Smokers know up to 10 days lower than nonsmokers and ar More susceptible to pulmonary emphysema, bronchitis, strokes, spirit disease and multiple cancers. Merely that's so and this is nowadays, and, goes the blemished thought, wherefore worry...
Steroids and Teens - A Problem on the Rise
The media attention that steroids have received in recent months is good news
and bad news for Minnesota parents. The good news is that the general public
is much more aware of the dangers steroids pose to our youth. The bad news is
that the...
The Value of Custom Baseball Gloves
Baseball gloves have advanced tremendously over the years. From the original game played with the bare hands to the advanced models of today, baseball gloves have as rich a history as the game itself.
The first gloves developed were not accepted...
Top Ten Things I Would Like To See Regarding Baseball
Top Ten Things I Would Like To See Regarding Baseball
1 Put the designated hitter in the National League or remove the DH in the American League. Let's create some uniformity. .
2 Re: Ground Rules or Grounds Rules or Grounds Rule - Not Grounds...
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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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