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Topic: Tennis ball

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	Tennis Ball Machines by Master Sports - SAM Tennis Equipment
		Tennis is believed to have been born in the late 1800’s in England.
		Tennis balls weigh between 1.98 and 2.1 ounces and measure between 2.5 and 2.6 inches in diameter.
		Tennis racquets cannot exceed 29 inches in length and the head cannot be larger than 12.5 inches tall or 11.5 inches wide for tournament play.
	mastersports.com (1599 words)

	Tennis - MSN Encarta
		Tennis, game played with a racket and a ball by two (as in singles) or four (as in doubles) competitors, on a rectangular court with a net strung between the midpoints of the longer sides of the court.
		A tennis ball is hollow and composed of inflated rubber covered with a fabric made of wool and artificial fibers.
		A standard tennis ball measures between 2.5 and 2.6 in (6.35 and 6.6 cm) in diameter and weighs between 1.98 and 2.1 oz (56 and 59.4 g).
	encarta.msn.com /encyclopedia_761553181/Tennis.html (1459 words)

	Coaching speed - tennis ball. - Youth Football Knowledge Base
		It is because I "frog race" my kids and "tennis ball" drill them that I am able (combined with my stance) to totally dominate defensive lines with drive blocks instead of having to resort to the usual "shoulder block".
		Players that are tennis ball drilled find themselves improving relative to the other players (particularly in our Sumo drill) and this encourages them to try harder and get better.
		Basically, you stand out in frint of a lineman in a three point stance and you either toss the tennis ball up in the air, or you drop it in front of him, and he has to catch it.
	www.infosprts.com /football/arch/2518.htm (1397 words)

	Tennis ball - Patent 4022469
		A tennis ball according to claim 1, wherein the aminoplast resin in the rubber is replaced to an amount of 30% by weight by a conventional filler for rubber, preferably by kaolin.
		Tennis balls which are used in the tournaments recognised by the major national organisations must comply with specific regulations of the International Lawn Tennis Federation.
		The tennis balls according to Examples 1 and 2 are compared in Table V in respect of rebound and deformation behaviour with inflated and non-inflated balls of the prior art.
	www.freepatentsonline.com /4022469.html (5411 words)

	Tennis ball - Wikipedia, the free encyclopedia
		A tennis ball is the bouncing ball designed for the sport of tennis, but also used in some other games, such as squash tennis, Battleball and lotball.
		Tennis balls in the early days of tennis were often made of leather stuffed with hair or wool.
		Tennis ball bombs of this nature are relatively common, and are typically abandoned by their makers when they do not detonate.
	en.wikipedia.org /wiki/Tennis_ball (1096 words)

	Table Tennis Ball Speed
		In this image, the ball streak is an estimated four and three quarter ball diameters meaning that the ball travelled three and three quarters ball diameters distance or 150mm.
		The beginning of the streak is the ball's position at the beginning of the exposure and the end of the streak is the position at the end of the exposure.
		It appears that the ball was hit while it was a short distance beyond Korbel's end of the table and that the ball isn't quite past the end of the table at the beginning of the fifth frame.
	www.jayandwanda.com /tt/speed.html (2597 words)

	Tennis 4 All - Tennis Dictionary (Site not responding. Last check: )
		Speed of the ball after striking and rebounding from an object (point on the string bed), divided by the ball speed before impact.
		A stroke in which the ball is hit with a lot of arc, high over the net.
		A spin in which the front of the ball (in the direction it is traveling) rotates down while the back of the ball rotates up.
	www.tennis4all.com /info/dictionary (2220 words)

	Tennis Balls
		The ball shall have a forward deformation of more than.220 of an inch (.56cm.) and less than.290 of an inch (.74cm.) and a return deformation of more than.315 of an inch (.80cm.) and less than.425 of an inch (1.08cm.) at 18 lb.
		Titanium balls will lose their liveliness over time (once the can is opened) like any other regular tennis ball, but they take longer to wear out on court.
		The ball is filled with a micro-cellular material that is designed to replace and simulate the effect of the increased internal pressure of a pressurised ball.
	www.tennislovers.com /Content/balls.htm (816 words)

	Tennis Science, Engineering and Technology
		is the density of air, d is the diameter of the ball, v is the velocity.
		Now you probably know that there are tennis balls made especially for high altitude play, but once the ball is in the air, physics takes over.
		A ball is served at 78 miles/hour (100 meters/sec) with heavy topspin on it.
	www.tennisserver.com /set/set_02_02.html (1611 words)

	Tennis Ball Baskets \| Tennis Teaching Carts \| Tennis Ball Pick-Up
		Ball bearings on axles and casters are sealed to resist dust, dirt and clay.
		This tennis ball basket features handles that fold up for ball pick up and flip down to raise basket to a comfortable level for dispensing of tennis balls.
		This tennis ball basket features handles that fold up for tennis ball pick up and flip down to raise basket to a comfortable level for dispensing of tennis balls.
	www.collinscompany.com /mall/BallBaskets.asp (544 words)

	BBC - Science & Nature - Hot Topics - Tennis - Balls
		The ball is put together in exactly the same way as the current one, but is 6% larger in diameter.
		Tennis balls are made of two pieces of rubber cemented together.
		When players inspect a ball prior to serving they are looking at the fabric to see whether it is showing any signs of wear and tear.
	www.bbc.co.uk /science/hottopics/tennis/balls.shtml (527 words)

	Ball - Wikipedia, the free encyclopedia
		Balls are usually hollow and spherical but can be other shapes, such as ovoid (only in a few special cases) or solid (as in billiards).
		In most games using balls, the play of the game follows the state of the ball as it is hit, kicked, or thrown by players.
		The purpose of playing with a ball or ball substitute such as the shuttlecock is that the focus of the game is the ball and not the opposing players.
	en.wikipedia.org /wiki/Ball (318 words)

	Tennis Ball Machines - Tennis Warehouse Australia - FAQ
		If you are serious about your tennis, or want to give your kids something that will improve their game, you should get a machine that has; top spin, slice, oscillation, a fast top speed, a large ball capacity and a good battery life.
		The top speed of a tennis ball machine is very important if you want the machine to be able to challenge you or your kids well into the future.
		For example, if you set the tennis ball machine to hit the baseline every time, you won't be able to achieve this because each ball will have a different pressure.
	www.tenniswarehouse.com.au /other/ballmachines/faq/faq.htm (2246 words)

	Tennis 4 All - Forehand Tip (Site not responding. Last check: )
		When you strike the ball on the right side of your body (left side for leftys), this type of stroke is called a forehand.
		Many people, when they first start playing tennis, will try to hit a tennis ball in the same way they hit, for example, a racquetball.
		When you contact the ball, the racquet should be approximately even with the front edge of your body.
	www.tennis4all.com /tips/forehand/beginner.shtml (1375 words)

	The World's Most Advanced Tennis Ball Machine
		Unlike any other traditional analog tennis ball machine, the SuperCoach offers a pattented technology to simulate any type of strokes to any impact point on the court and in any sequence.
		Named, not to replace but to be the extention of a tennis coach, it will help you to return strokes better, to improve and monitor your performance.
		For example, if you are an avid tennis player, but no one is available for a game, you have a partner to play a real competitive game with you or you can just practice your drills and strategies, whether you are a beginner or an advanced player.
	www.tennis-ball-machines.us /index.htm (311 words)

	Ball Machines
		A ball is lodged at the throat of the tube and is retained by a collar that is slightly smaller in diameter than the ball.
		Balls are thrown in different and somewhat unexpected locations to simulate play with an opponent.
		Battery powered ball machines are usually supplied with a battery charger that plugs into a household outlet and that connects to the control panel of the machine.
	www.sptennis.com /ballmachines.asp (3144 words)

	Tennisopedia
		Describes a grip which allows the ball to be hit easily ahead of the body and the racquet swung all the way through.
		The ball is hit to a precisely chosen part of the court, usually one that the opponent cannot reach.
		When one side of the ball rotates against the air resistance, it is forced to swerve to the opposite side; e.g.
	www.tennislovers.com /Content/tennisop.htm (3490 words)

	Conway Tennis Ball
		Jack loved the game of tennis and he leaves a tremendous legacy of service and love to everyone who knew him or came in contact with him.
		For all these reasons and more, we are having the Conway Tennis Ball at the indoor tennis facility at Hendrix College on Saturday, November 18, 2006.
		The Conway Tennis Ball is a revolving doubles tournament designed to bring players of varying experience and abilities together on the court for a day of tennis and fun.
	www.conwaytennis.com /tennisball.asp (661 words)

	Tennis Ball Machine
		Thanks to its built-in random oscillator, the Ball Bucket is a fully equipped ball machine capable of performance found in machines costing hundreds of dollars more.
		Lobster 201 Ball Bucket Ball Machine : Thanks to its built-in random oscillation, the Lobster 201 Ball Bucket Tennis Ball Machine is a fully equipped ball machine capable of performance found in machines costing hundreds of dollars more.
		Lobster 301 Hybrid Ball Machine Thanks to its built-in random oscillation, the Lobster 301 Hybrid Tennis Ball Machine is a fully equipped ball machine capable of performance found in machines costing hundreds of dollars more.
	www.tennisheadquarters.com /tennis-ball-machine.htm (276 words)

	Playmate Tennis Ball Machines \| Playmate Tennis Ball Mower
		The Playmate PC tennis ball machine can save an endless number of drills that can be recalled later at the touch of a single button.
		This tennis ball machine is totally upgradeable to the top of the line tennis ball machine that we make, the PLAYMATE PC tennis ball machine.
		This tennis ball machine cannot be upgraded to become the SMASH, the DEUCE, the GENIE, or the PLAYMATE PC tennis ball machine.
	www.collinscompany.com /mall/Playmate_Tennis_Ball_Machine.asp (621 words)

	Tennis Affinity - Unique Tennis greeting cards and gifts.
		We collect thousands of tennis balls from across the country and donate them to schools The balls are attached to the bottom of desks and chairs to reduce noise and protect the floor from ware.
		Insert used tennis balls in the tank of a toilet to reduce the water used per flush of the toilet.
		In bushfire prone areas in Australia, an old trick is to keep a bucket of old tennis balls in the garage.
	www.tennisaffinity.com /balldilemma.html (1135 words)

	The Hot Versus Cold Tennis Ball
		If you use old or used tennis balls in this experiment be consistent - use balls opened at the same time; used balls should have the same amount of wear.
		Balls can be placed near or on a safe heat source - wrapping the tennis balls in a heating pad works well.
		Do not remove the heated or cold balls from their surroundings until you are ready to test them.
	wings.avkids.com /Curriculums/Tennis/hotcold_howto.html (493 words)

	Turbo Tennis
		Granted, every ball has some topspin associated with it after bouncing, but in fact, the height of the bounce can vary greatly by the spin imparted to the ball before the bounce.
		Balls that come at you with slice/backspin are not likely to bounce as high after making contact with the court.
		Whenever one strikes a tennis ball properly (regardless of spin) the racquet face is usually perfectly perpendicular to the ground.
	www.tennisserver.com /turbo (1909 words)

	Sport! Science: That's the Way the Ball Bounces (Site not responding. Last check: )
		I ran to make the catch but misjudged the ball's trajectory--the tennis ball lost speed faster than a baseball.
		To understand what happened to me back in my grade school days I suggest that you take a tennis ball and a baseball, hold them side by side at waist level, and drop them onto a hard, bare floor.
		Balls are suited to the games that we play with them.
	www.exploratorium.edu /sports/ball_bounces/index.html (346 words)

	Chuckit, HyperDog, and more. All from SitStay.com
		uses a standard-size tennis ball and is designed for hands-free pickup...you'll never have to bend down and pick up a slimy ball again.
		Ball Stomp'r, a great way for kids and adults to play ball with their dogs.
		The 'Go-Frrr' Ball is a firm sponge rubber ball with a built-in loop of heavy duty surgical tubing.
	www.sitstay.com /store/toys/toysball2.shtml (950 words)

	Tennis Ball Machine, Tennis PracticeHit PLUS
		The Tennis PracticeHit PLUS tennis ball machine is a sturdier, taller unit for the advanced player who wants the very best.
		The ball is firmly secured by a rubber ring that also accepts the contact impact to make ball wear negligible.
		The Tennis PracticeHit PLUS tennis ball machine is a superb trainer for fitness and sports camps as well as a fantastic family exercise unit.
	www.tennispracticehit.com /tennis_ball_machine_tennis_practice.htm (617 words)

	Tennis Ball
		Team members each receive four tennis balls that have been treated with a substance that makes them impervious to contamination.
		Using only the tennis balls, your team is to make their way across the contaminated area.
		Tennis balls can be shared and be used in any manner or position on the floor.
	www.cyfernet.org /integrate/iowa/stenball.html (275 words)

	TENNIS.com - Features - Eyes on the Ball: The latest injury suspect (Site not responding. Last check: )
		Tennis' governing bodies areÂ starting to examine the impact of tennis balls on player injuries.
		To many fans, a tennis ball is just a tennis ball: itâs yellow, itâs bouncy and it loses its pressure over time.
		But the real issue is not the total number of events using the same ball, but how often players must change between balls as they go from event to event.
	www.tennis.com /features/general/features.aspx?id=54756 (1114 words)

	Inhabitat » TENNIS BALL BENCHES by Remy/Veenhuizen
		You may have thoughts tennis balls were just for tennis - but creative Dutch designer Tejo Remy has found a another use for the bright yellow bouncy felt-and-rubber balls.
		The seats are fashioned from a steel frame and dozens of tennis balls, to bring a bit of color and bounce to the museum’s interior.
		Come to think of it, tennis balls are fuzzy and cushy, so if you mount them to a steel frame like Tejo did here, these might just turn out to be comfy seats.
	www.inhabitat.com /2007/07/04/remyveenhuizens-tennis-ball-benches (1197 words)

	NASA - Tennis Ball
		Together, they demonstrated tennis ball aerodynamics to students in order to pique their interest.
		The wake behind the smooth ball is almost as wide as the ball, creating a great deal of pressure’; drag that adds to the sticky air drag on the front side of the flying ball.
		Surface roughness, such as dimples on a golf ball, produce turbulence in the slow-moving air close to the ball and the more energetic layer separates much later, thus leading to a smaller wake.
	www.nasa.gov /centers/ames/news/releases/2000/00_58AR.html (1108 words)

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