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よく一緒に購入されている商品
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Helping coaches and players streamline their learning systems, improve their performance, and further their understanding and enjoyment of the game, this book provides an entertaining and enlightening look at the physics behind how to use a racquet to change the speed and direction of a tennis ball. Distinguishing the science from the folklore and myth, it makes the physics of tennis understandable to players of all skill levels. Important issues such as the role of string tension, the meaning of power, the importance of swing weight, and the relevance of the various sweet spots are addressed. Athletes are shown how to play better tennis by obeying the laws of the universe, optimising equipment for ultimate performance, and understanding the dynamics of tennis events. From speed-to-spin ratios and shock vibration scales to choosing string on a moist day, this guide covers it all.
Book Description
The life's purpose of a tennis racquet is to change the speed and direction of a tennis ball. This momentous event takes place in approximately five one-thousandths of a second. During that time, the ball and the racquet launch into a frenzy of technology-enhanced physics:
The strings stretch, deflect, vibrate, store, and return energy.
The ball squashes, slides, bites, reverses direction, ejects, and flies away like vibrating jello.
The racquet decelerates, rotates, bends, twists, and vibrates.
Bending waves race up and down the racquet, slamming the handle into the hand.
Pain, frustration, anger, joy, or elation explode forth from the collision.
Players paying upwards of $300 per racquet and $50 for restringings can spend hundreds of dollars every year trying to influence any of these events in their favor. This book explains the what, how and why of those fateful collisions on each side of the net, as well as the flight and the bounce of the ball in-between.
Howard Brody and Rod Cross, the top two experts on the physics of tennis in the world, join forces with Racquet Tech magazine's technology expert, Crawford Lindsey, to lead readers on a mind-expanding adventure covering everything players, coaches, stringers, retailers and teaching pros ever wanted to know about tennis equipment and how it affects performance!
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カスタマーレビュー
Amazon.com で最も参考になったカスタマーレビュー (beta)
Amazon.com:
7件のカスタマーレビュー
28 人中、28人の方が、｢このレビューが参考になった｣と投票しています。
Get the real scoop based on scientific facts
2003/12/19
形式:ペーパーバック|Amazonが確認した購入
This is an excellent book that dismisses many myths regarding tennis equipment. The three coauthors include two physicists and one tennis pro. They are all avid tennis players. They also have incredibly investigative minds. The book consists of about 40 different articles covering many different technical subjects regarding stroke mechanics, ball bounce, racquets, and strings. All these articles represent serious investigation and research from a physicist standpoint. These articles stand on their own independently. As a result, you do not need to read them in sequential order. You also don't need to read them all to extract the information you care about. For my part, I skipped some of the articles on the physics of ball bounce, but was very interested on all the articles regarding strings and racquets properties. Depending on your own personal interest, you may read or focus on different sets of articles. Given the rather dry subject, the writing style of the authors make the information easy to digest.
Contrary to what players believe, racquets have very similar power. Strings, regardless of tension and type have also very similar power. But, different strings can feel very different based on their respective stiffness. Gut and high quality nylon strings feel soft because they are relatively flexible. Kevlar does not feel so good, because they are the stiffest strings.
According to the authors, the pros don't use any of the high-tech latest models, including oversize, and widebody frames. They use older models customized with lead tape to add swingweight. Oversize racquets are not maneuverable enough at their playing speed.
The authors state throughout the book that racquets that are stiff strung at low tension feel better. A stiff racquet vibrates less. Its vibrations have a faster frequency. The ball sits longer on low tension strings than the fast vibration of a stiff racquet. As a result, both string and frame vibrations are dampened by the longer impact time of the ball. Thus, the least amount of vibration occurs in stiff racquets strung at low tension.
The book has a whole lot more of interesting information about tennis than I share in the above paragraphs. If you love the game, and are somewhat of a quantitative type, you will love this book.
27 人中、26人の方が、｢このレビューが参考になった｣と投票しています。
The truth about tennis rackets
2002/12/18
形式:ペーパーバック
Don't buy your next racket until you read this book. This book, by 2 physicists and a tennis specialist, sets forth what they have found scientifically about tennis rackets and technology. The book takes considerable concentration to mine the lessons learned for your game. But here are a few of the nuggets I found:
1) All rackets have essentially the same power!
2) Stiff rackets vibrate less and feel better.
3) Soft strings and lower tension feel better.
4) String tension has little effect on power.
5) No one knows how to measure "control".
6) Perimeter weighting drastically reduces shock.
7) Backspin groundstrokes are easier to hit than topspin, but have much less tolerance for error.
8) Stand inside the baseline when receiving a slow serve and bash it at the netman. He'll have no time to react.
1) All rackets have essentially the same power!
2) Stiff rackets vibrate less and feel better.
3) Soft strings and lower tension feel better.
4) String tension has little effect on power.
5) No one knows how to measure "control".
6) Perimeter weighting drastically reduces shock.
7) Backspin groundstrokes are easier to hit than topspin, but have much less tolerance for error.
8) Stand inside the baseline when receiving a slow serve and bash it at the netman. He'll have no time to react.
On the downside, the authors should have done a much better job of summarizing the findings. The chapters are written in sort of a mystery fashion, where you have to wait until the end to get the lessons. The first book by Dr. Brody did a much better job of summarizing the findings for the general tennis player.
Finally, a book that helps you sort through tennis rackets! Unfortunately, the authors conclude that your skill and arm make the difference in how good you are. No racket will take you directly to Flushing Meadows.
4 人中、4人の方が、｢このレビューが参考になった｣と投票しています。
Great Analysis of Subject
2006/3/28
形式:ペーパーバック|Amazonが確認した購入
This is an excellent review of every conceivable aspect of tennis and the colliding forces on the ball. It covers frames, spin, deceleration... about the only thing I can think of that was not covered was differences in altitude and high altitude vs. regular tennis balls. Mathematical formulas are provided throughout describing the physical phenomenon that is being explored. I loved the section of the rate of deceleration of the ball, which helped me to understand why my serves seemed to be quite fast, but only registered 95-100 mph at the net. This was good stuff!
My review did not earn 5 stars because the book is a little bit dated in terms of current racquet choices, and because it appears that a little bit of material is redundant from chapter to chapter, and I wonder if this could be either justified or eliminated in a subsequent edition.
If you have ever wondered if a coach/friend was giving you factual information about your game, read this book!
My review did not earn 5 stars because the book is a little bit dated in terms of current racquet choices, and because it appears that a little bit of material is redundant from chapter to chapter, and I wonder if this could be either justified or eliminated in a subsequent edition.
If you have ever wondered if a coach/friend was giving you factual information about your game, read this book!
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