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Why Do Golf Balls have Dimples?

by Roger Titley

In the physical world of air pressure, turbulence, and aerodynamics, surface structurestructure of the surface is a major design consideration. There are several historical events that have contributed the design and make-up of the golf ball. Eventually, after hundreds of years, a better design and composition of the golf ball has been achieved, based on scientific understanding . The humble golf ball is a good example of the development of the history of aeronautical engineering.

During the early days of the game of golf on the eastern coast of Scotland, nearly all of the players used ancient apparatus in order to play the game of golf which was a more varied game than it is today. In these early days, the first golf clubs and golf balls are made of wood.

In 1618 the feather golf ball was used for the first time and gained popularity. This version of the golf ball became known as the "Featherie". This feather golf ball was a handcraftedhand made golf ball that comprised of goose feathers securely pressed into a horse or cowhide outer casing. The whole process was carried out while the ball was still wet. As the ball dried out, the leather shrank and the feathers expanded to form a hardened golf ball.

Because these types of golf balls were specially handcrafted, they could easily cost more than the golf clubs. As a result, only only people with money had the money to play the game of golf at this time.

The next version , to become popular was the Guttie golf ball. This ancient type of golf ball was constructed from the rubber like sap from the Gutta Percha tree which comes from the tropics. These Guttie balls could be simply shaped into a sphere when hot. as they became cooler, they kept their shape and could then be used as a golf ball. With its rubber nature, Guttie balls could be cheaply reproduced and could be simplyquickly repaired by reheating and re-moulding.

In a comparison between the two earliest forms of golf balls, the feather golf ball was known to travel cover more ground than the rubber Guttie. The reason for this difference was eventually confirmed as being due to the difference in surfaces. The smooth surface of the Guttie reduces the ability of the golf ball to cover more distance.

With this scientific understanding, the makers of golf balls eventually produced with balls with the "dimples" that are associated with modern golf balls in use today.

Dimples are crafted onto golf balls so as to minimise the aerodynamic drag, which acts on the ball and is raised if it were totally smooth. This is because smooth balls, when travelling through the air, create a large pocket of low-pressure air in its wake therefore producing drag. The drag acts as an anchor and the ball slows down.

Alternatively, by placing dimples on golf balls, the pressure differential goes down and the drag is reduced. These dimples create turbulence in the air around the golf ball. This, in turn, makes the air cling to the golf ball more closely. By doing so, the air flows in to the wake created by the ball instead of flowing past it. This results in a smaller wake and less drag. So the ball travels further.

Dimples also help players to put backspin on a shot so making the golf ball break off on the putting green.

The concept of putting dimples on golf balls can be traced back to the Gutta Percha phase of development. It was Coburn Haskell who introduced the one-piece rubber cored ball encased in a Gutta Percha sphere. It was during this time that players bacame aware of how their shots became more and more predictable the more they played with the same ball. They noticed that the rougher the balls became the more precisely and further they could hit it.

When William Taylor applied the dimple pattern to a Haskell ball in 1905, golf balls finally took on their current shape. So the dimples were born. From then on, dimpled golf balls were officially used in every golf competition. In 1921, the dimpled golf balls took on a standard size and weight.

Nowadays, there is a large selection of golf balls to fit different golf games and conditions. Some golf balls offer greater control, while some others provide greater distance. However else these golf balls vary, they all have one attribute in common and that is the dimple. Golf balls are not just items of golf equipment; they are a paradigm of a concept in physics!

Roger Titley is a successful webmaster who manages http://www.newgolfputter.com which is dedicated to all aspects of golf

Published June 28th, 2008

Filed in Recreation

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