...GOLF BALLS The design and aerodynamics of a golf ball is very interesting. I've always wondered why a golf ball has all those little dimples on it (I just thought it was for the look) but never took the time to read about it until now. About 600 years ago someone realized that an older, rougher ball performed better than a new smoother ball, thus the evolution of dimples. In the last 150 years, research and tests have been conducted to see if the performance of the golf ball could be enhanced. Research found through wind tunnels and an indoor test range that, on a smooth ball the airflow separates from the ball at 80 degrees from the direction of flight (more to the front of the ball). This in turn creates a large turbulent flow (low pressure area) at the rear of the ball creating unwanted drag. The same tests were conducted on golf balls with dimples, showing that the dimples create surface turbulence, which increases the energy to the airflow along the surface of the ball. This makes the airflow separate at 110 degrees from the direction of flight (more to the rear of the ball), thus in turn creating a smaller turbulent flow (low pressure area) at the rear of the ball creating less drag. With all the research that has been conducted over the last 150 years experts have come to the conclusion that there is only about ± 4 yards to gain on the maximum range of a golf ball. So next they will have to turn to research on the...
Words: 268 - Pages: 2
...P E RF ORMANCE I NDIC ATOR ™ TECHNICAL OVERVIEW 2 GOLF BALL CONSTRUCTION AND THE EFFECT OF WATER ON A GOLF BALL 3 RESEARCH AND CONCLUSIONS (PAGE 4) 5 HOW WATER DAMAGE, UNAUTHORIZED REFINISHING, AND REFURBISHING AFFECT A GOLF BALL 6 HEAR IT FROM THE EXPERTS 8 ARTICLE LINKS 9 DID YOU KNOW THAT THE USGA REGULATES DISTANCE? 2 GOLF BALL CONSTRUCTION The two final layers or coatings of golf ball construction include a primer and a “protective” gloss coating. The primer, in most cases, is water-borne polyurethane and the final layer of protective gloss coat is generally a two-part solvent-based polyurethane. The protective coating is designed to be water permeable. When a golf ball is struck, it creates micro-cracks, allowing for increased passage of humidity/water. To prevent macro cracking or bubbling of the protective gloss coat, the coating must be designed to allow water to flow freely.The core or “engine” Golf ball construction is generally broken down into four main types: LIQUID CENTER Construction: Small rubber or plastic core filled with liquid, surrounded by rubber windings tightly wrapped around the core. Primary cover materials include Balata, urethane or elastomer. Models Include: Maxfli Elite, Slazenger Pro Preferred, Titleist Professional, Titleist Tour Distance. Players: Tour Pros and and low handicap amateurs looking for control and feel around the greens. SOLID CORE WOUND Construction: Large...
Words: 3187 - Pages: 13
...Now, Tennis Balls Are Chasing the Dogs; Penn Racquet Sports courts canine customers Dennis Berman in New York. Business Week. Suppose your industry were in free fall. What would you do to find more customers? Would you go global in search of sales? Try the Internet? How about switching species? That's the drastic move made by Penn Racquet Sports, the nation's No.1 maker of tennis balls, which is suffering from flat sales and a decade-long lull in recreational tennis. This month, Penn begins marketing its familiar, fuzzy orbs to some undeniably loyal customers: dogs. R.P. Fetchem's is a traditional tennis ball that has been gussied up as a ``natural felt fetch toy'' for pooches. ``Ten times more people own pets than play tennis,'' explains Penn President Gregg R. Weida, owner of a schnauzer named Jake. NO DYES. Penn is teaching an old ball new marketing tricks--and hoping to bounce its estimated $70 million in sales up by 5% to 10%. For the benefit of four-legged consumers, Penn has made the balls dye-free. They sport the Ralston Purina Co. logo, thanks to a licensing deal with the dog-food giant. The biggest change is the price: $4 to $5 for a can of two Fetchem's vs. $2.50 for three old-fashioned tennis balls. That hasn't deterred retailers. [pic]PetsMart Inc. will test them, ordering 400 cases for its 413 stores. ``The fact that it's got the Ralston name and the natural felt are pluses,'' says Greg Forquer, [pic]PetsMart vice-president for merchandising. But that won't...
Words: 729 - Pages: 3
...A golf ball manufacturer desires Click Link Below To Buy: http://hwaid.com/shop/a-golf-ball-manufacturer-desires/ A golf ball manufacturer desires to compare the distance traveled by golf balls using four unique designs. Fifteen balls were manufactured and each was brought to the local golf course for testing by the local pro. The order of the golf balls hit by the professional was randomized so the pro did not know which ball was being hit. All 60 balls were hit over a short time period to reduce any potential environmental effects. Distances traveled for each ball are: A B C D 1 206.32 217.08 227.77 230.55 2 207.94 221.43 224.79 227.95 3 206.19 218.04 229.75 231.84 4 204.45 224.13 228.51 224.87 5 209.65 211.82 221.44 229.49 6 203.81 213.9 223.85 231.1 7 206.75 221.28 223.97 221.53 8 205.68 229.43 234.3 235.45 9 204.49 213.54 219.5 228.35 10 210.86 214.51 233 225.09 11 207.94 221.43 224.79 227.95 12 204.45 224.13 228.51 224.87 13 203.81 213.9 223.85 231.1 14 205.68 229.43 234.3 235.45 15 210.86 214.51 233 225.09 1. At the 0.05 level of significance is there evidence of a difference in the mean distances traveled by the golf balls with different designs? 2. Do the results in question 1 indicate that it is appropriate to use the TukeyKramer procedure to determine which designs differ in mean distances? You may need to do a little research of your own to get the equations to do this. It is not hard but Excel does not do this calculation with a "couple...
Words: 345 - Pages: 2
...When people try to think of all the media moguls in our history, almost all of the names that come up belong to men. However, I would like to take the time to discuss some of the female moguls. Lucille Ball changed television forever, with both her portrayal of characters on screen and her work of television production behind the screen. For over three decades, Lucille Ball was the most highly recognized and adored entertainer in the world, although many addressed her simply as Lucy. This of course was due to her portrayal of a certain clumsy housewife of the same name who managed to turn everyday activities into unparalleled hijinks and adventure. Lucy won the hearts of nearly every American, regardless of social or cultural stature. Ball’s expertise was wide and diverse, which led to the success of her notable role. After dropping out of high school at age fifteen, Lucille Ball picked up and relocated to New York City to pursue her dream of acting. Finally, in 1927, Ball got cast in her first show as a chorus girl. This job then led her to her big break, the Chesterfield Cigarettes poster girl. After that, her career skyrocketed. She began getting cast in major films like Eddie Cantor’s Roman Candles (1933). Soon after, it became nearly impossible to go to...
Words: 643 - Pages: 3
...Carlill v Carbolic Smoke Ball Company. In the Court of Appeal. 7 December 1892 [1893] 1 Q.B. 256 Lindley , Bowen and A. L. Smith , L.JJ. 1892 Dec. 6, 7. Contract—Offer by Advertisement—Performance of Condition in Advertisement—Notification of Acceptance of Offer—Wager—Insurance— 8 & 9 Vict. c. 109 — 14 Geo. 3, c. 48, s. 2 . The defendants, the proprietors of a medical preparation called “The Carbolic Smoke Ball,” issued an advertisement in which they offered to pay 100l. to any person who contracted the influenza after having used one of their smoke balls in a specified manner and for a specified period. The plaintiff on the faith of the advertisement bought one of the balls, and used it in the manner and for the period specified, but nevertheless contracted the influenza:— Held, affirming the decision of Hawkins, J., that the above facts established a contract by the defendants to pay the plaintiff 100l. in the event which had happened; that such contract was neither a contract by way of wagering within 8 & 9 Vict. c. 109 , nor a policy within 14 Geo. 3, c. 48, s. 2 ; and that the plaintiff was entitled to recover. APPEAL from a decision of Hawkins, J. 1 The defendants, who were the proprietors and vendors of a medical preparation called “The Carbolic Smoke Ball,” inserted in the Pall Mall Gazette of November 13, 1891, and in other *257 newspapers, the following advertisement: “100l. reward will be paid by the Carbolic Smoke Ball Company to any person who ...
Words: 8045 - Pages: 33
...especially when you put it in the hands of a well-trained player. There are all different kinds of people that use a basketball. You have kids just starting out to people that have never played before to the finest athletes in the world. There are people whose expertise is dribbling and others who are much better at shooting. There are others that can jump and grab the ball 12 feet in the air and you have players that focus their game on dunking the basketball. I often wonder why a basketball looks to appealing when you see one sitting on the ground. I don’t think I have ever walked by a basketball without picking it up to dribble it a few times and if there was a rim, there’s no chance I’m not shooting it. A basketball is appealing to the eye. One of my favorite sights in the world is seeing a basketball perfectly swoosh through the net. I still often wonder how the most recent version of the basketball got to be the way we see it today. The basketball we have all come to know is an inflated sphere. Basketballs range in size from very small promotional items to regular sized and finally extra-large balls nearly a foot in diameter used in training exercises to increase the skill of players.(1) The standard size of a basketball in the NBA is 29.5 to 29.875 inches in circumference.(1) It always gives me a chuckle to see a basketball get stuck in the side of a rim. Why in the world would the creators of the game make sure that wouldn’t happen? It is a small flaw...
Words: 579 - Pages: 3
.............................................................................. 3 Coaching Points: ............................................................................................................... 4 Ages 6-10 .............................................................................................................................. 5 Coaching Points: ............................................................................................................... 6 Ages 11-15: ........................................................................................................................... 7 Coaching Points: ............................................................................................................... 8 Ball Familiarity ......................................................................................................................... 9 Dribbling: .............................................................................................................................. 9 Passing: ................................................................................................................................. 9 Shooting: ............................................................................................................................... 9 Trapping/Control: ................................................................................................................. 9 Heading:...
Words: 9054 - Pages: 37
...decent thing was the fact that the ball was always pumped right. Now imagine all the new, various forms of technology that has come about since 1863: computers, smart phones, smart watches, televisions, vehicles etc., it is only right that Football has a fair share of the technological advancements. From muddy fields to constantly trimming the grass before games, Astro Turf fields are the future. They don’t just save you the stress of refilling the worn out areas and constant mowing the grass, they enhance the performance of the players. Also suitable for any weather, the astro turf fields are made of plastic blades of grass that are filled with small, crumbly rubber like shavings with gives players a better grip. Another positive about this piece of technology is that it prevents unwarranted injuries that can come from unlevelled grounds or a field consisting of many holes. Moreover, technology has played a key role with the equipment used for the game. Firstly, the advancement of shin pads; they don’t just guard the shin anymore, they are now being mad with shock absorbers, reducing the impact of a tackle on that area. The shin is a very delicate part of the body, and even the advanced shin pads can’t really prevent damage from a reckless and dangerous tackle. Secondly, the ball. Different balls are made for different leagues and for different competitions within the various leagues. Officials and players complain every now and then about the balls being played with, but as of...
Words: 799 - Pages: 4
...OTHER EXPERIMENTER: FULL NAME: EDA HAZAL RAŞİT STUDENT NO: 140203009 EXPERIMENT PERFORMED ON: 30/09/2015 REPORT SUBMITTED ON: 07/10/2015 EXPERIMENT 1: The Relationship between Time of Flight and Initial Velocity Equipments: 1. Projectile launcher 2. Time-of-Flight Accessory 3. Xplorer GLX (as timing device) 4. Yellow Nylon Ball (2.5 cm diameter, 10 g) 5. Photogate 6. Photogate bracket 7. Carbon paper 8. White paper 9. Measuring tape 10. Duct tape Purpose: Purpose of this experiment is to Procedure: I have equipment to measured the fall time and I have different ball. This lesson was my first LAB so I didn’t know anything about equipments and teacher have thought equipments. After that, we make a group and we have started. We started the experiment by connecting material such as control box, drop box and AC adapter. After, I set the h=1,50. This distance between the bottom of the ball and the time of flight accessory. It is very important because if we didn’t calculate truely, we could find wrong results again. However,...
Words: 628 - Pages: 3
...The project approach Katz, Lilian G. Scholastic Early Childhood Today12.6 (Mar 1998): 43-44. Turn on hit highlighting for speaking browsers by selecting the Enter button Abstract (summary) TranslateAbstract Engaging children in active investigations of topics that have personal meaning for them can enhance a curriculum and a child's desire to learn. Projects are ways to help children answer their own questions and learn more about the world. Full Text * TranslateFull text * Headnote Enhance your curriculum by engaging children in active investigations of topics that have personal meaning for them. Projects are ways to help children answer their own questions and learn more about the world. A PROJECT IS an in-depth investigation of a topic worth learning more about. The study is undertaken by a small group of children within a class, by a whole class, or occasionally by an individual child. The key feature of a project is that it is a research effort focused on finding answers to questions about a topic posed by children, the teacher, or both. Rather than simply seeking right answers, the goal of a project is to learn more about a topic. The Place of Project Work The project approach should be seen as complementary to the more informal parts of the early childhood curriculum. Project work is not a separate subject; it provides contexts for applying specific skills learned in other parts of the curriculum. Nor is project work an "add on" to the basics; it is integral...
Words: 1238 - Pages: 5
...Person Analysis We went to local, family based cricket ball manufacturers. We observed the whole process of leather ball making which is a two steps process consisting of leather processing and stitching. We use some of the key criteria’s for person analysis Work History Cricket ball making has a major work area in leather processing. As each product being made in Meerut, by family owned businesses is particularly based in distinct villages, cricket ball making is situated in Shobhapur. It used to be the major business of many families but currently only a few players exist there. The reason being, entry of bigger players and more importantly, the manual work of leather processing which is a taboo in that place since it creates a stink and makes the place inhabitable. Nevertheless, manually processed leather has its own positives too which has made sure the sustenance of these businesses. We spoke to the workers making the balls. The roles are caste based. Lower caste people do the leather processing work. It’s a week-long process which involves cleaning the leather and drying it. Their own community people follow them in that line of work. In case of stitching too new workers are brought by the old ones and taught. People continue what their family business is into, for example for a family; its generations would continue to manufacture balls, which they have been doing since years. Training received As per survey they all received on the job training. There isn’t any...
Words: 607 - Pages: 3
...1990’s T.V in a lady's basement. I was strapped in a carseat being baby sat by our neighborhood babysitter, watching Mickey Mouse with my stuffed soccer ball with a goth bedroom looming in the darkness in the other side of the basement. I wasn’t alone either all the neighborhood kids are there. Then I’m starting to get bored so I chuck my soccer ball across the room vividly regretting what I just did, because the fact I was in a carseat I could not walk at all. So I sat there and thought and finally I was going to try and walk with the carseat on my back, so I was trying my hardest to get up then I did, now the hard part was walking. I walked...
Words: 995 - Pages: 4
...Pokémon are different from humans in biological structure. In fact, their matter is unstable and has a certain tendency to turn into a special form of energy. This is, however, only triggered by certain radiation. This radiation is that of Apricorns, those nut-like fruits people made Pokéballs out of in ancient times. The inside of an Apricorn's shell contains energy drainers, a sort of biological energy black holes - they let out that certain radiation and they can suck energy in to their centers. Those are there to protect the Apricorns from Pokémon that might want to eat them in a very effective way - a Pokémon that cracks the shell of an Apricorn will be hit by the radiation, turn into energy, and be sucked towards the Apricorn. This can imprison smaller Pokémon inside forever - which additionally provides the Apricorn with more power to suck in more Pokémon - or if it is a powerful Pokémon, it would feel dizzy and perhaps decide the Apricorn is not good to eat. If a Pokémon actually eats the Apricorn, however, it dies and the energy drainers release the energy they contained. Different types of Apricorns, targeted as food for different kinds of Pokémon, contain different kinds of energy drainers which suck in different types of energy - usually some form which is dominant in some Pokémon and not others (such as Water Pokémon, fast Pokémon, heavy Pokémon, etc.). All Apricorns contain some drainers for all variations, though, so they can all catch anything that is weak...
Words: 459 - Pages: 2
...ALZ HEIMER job shadow I have the opportunity to serve in Silverado Alzheimer center. It´s a heritage center and hospice too. It has a psychology and rehabilitation unit. There are patients of different Alzheimer´ Stage. Their goals is to provide the patient a better quality of life. Their goal is to provide a better memory to the patient to benefit the life of the patient and his family. There is an Occupational therapy area. It has many instruments. There are different balls, poles, math , mats, bottles, belts, hand cycles, ropes, etc. There are some chairs for the visitor. They can wait there while the patient finish his therapy. The Occupational Therapy room has three lines on the floor which the patient stand up to evaluate their ability to throw up balls, pad, balloons, foam rollers. They have all the Occupational Therapy objects organized in shelves. There are different settings. There is a rehabilitation room. There is one portable tablet, a huge exercise ball. Furthermore, Home care is one of the priorities. There are many home adornment , instruments and kitchen dishes as a decorations in the shelves of the halls. It helps the patient to feel like at home. There is a big dinning area which the patient relate with others and share time. There is a cultural hall which elderly have a variety of activities. I could observed three patients. The first patient was diagnosed with a a shoulder leisure several months ago and have dementia stage 2 since...
Words: 570 - Pages: 3
