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A little history of Bell Helmets!
Do you know that the company that makes Bell helmets did not start out making helmets? It was a company that sold auto parts -- Bell Auto Parts -- started by George Wight in Bell, California, in 1923. In 1933, Rogy Richter went to work for Wight....
Dan - A Great Coach
Dan - A Great Coach My wife, my daughter and I had been eagerly anticipating my daughter’s first lesson with Dan, her new batting coach. Of course, we heard how good he was. Our next door neighbor spoke glowingly of Dan’s expertise as a batting...
Inspiring Baseball Quotations
I loved being around the baseball players when they had something to say that I thought would have a positive impression. Here are some of the quotes that I have enjoyed and have inspired me.
Bob Gibson
“ I owe the public one thing - a good...
Schilling to the bullpen; it's a "good thing"
Perhaps Johnny Damon’s in a panic (Why are you guys still petrified of the Yankees??) with the news of Curt Schilling’s return to the Red Sox in a bullpen role. But, this latest move by Boston, in the wake of Keith Foulke’s injury and...
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...
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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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