## How Many Dimples Are On A Golf Ball?

Jul 25, 2023

#### How many dimples are there on a standard golf ball?

Final thoughts – And there you have it: on average, there will be 336 dimples on a golf ball, but, as we mentioned, how many dimples a specific golf ball has will vary from model to model. These dimples serve a very important function; a smooth surfaced golf ball would never work in the modern golf world because the ball would quickly come back down to earth soon after you hit it with a golf club.

The dimples on a golf ball determine exactly how it’s going to travel in terms of how straight, how high and for how long. The best golf balls, however, have a brilliant balance between depth, size, and the number of dimples. The best way to find the perfect dimple pattern is to try out as many golf balls with as many varieties of dimples as you can.

Take your time when doing this; by finding the right number of golf ball dimples, you will quickly begin to see how it can significantly affect your game from the off. The ball’s dimple pattern and count will usually be printed on the golf ball itself, as it’s important to know exactly what you are working with on the golf course.

### Which sports ball generally has 336 dimples?

History Of The Game Of Golf | History Of The Golf Ball | Rules Of The Golf Ball | Science Of The Golf Ball | Golf Glossary Golf Ball Construction | Golf Ball Types | Golf Ball Compression | Golf Ball Dimples | Golf Ball Distance | Golf Ball Spin So, just How many Dimples are there on a Golf Ball? Well, the number of dimples on a typical golf ball is generally 336 but, the number of dimples on a golf ball can range anywhere from 300 to 500 depending upon the golf ball, manufacturer and dimple design.

1. Golf Ball Dimple Shape, Alignment and the Dimple Effect Though the swing of the golf club provides the impact, it’s the design and construction of the golf ball that makes it go.
2. Golf balls with a harder core (high compression ratio) travel further because they deform less upon impact and produce a greater transfer of energy, and then there are the dimples.

The dimples on a golf ball may vary in size, shape, depth and configuration, they all share a common purpose to provide longer and higher flight to the ball. A dimpled golf ball can travel two to three times as far as the same ball with no dimples. The dimples allow air to flow over the golf ball, providing less drag.

Also, hitting a golf ball results in a rapid backspin, this forces airflow downward and creates an opposite upward force that provides lift. Why do Golf Balls have Dimples? Golf ball dimples refer to the depressions on the surface of the golf ball, which have a significant effect on golf ball lift and how far a golf ball travels.

This fact has prompted a great deal of research on golf ball dimple shape and alignment. In recent years, golf ball manufacturers have even introduced “dimple plus” alignments, in which seam lines have been eliminated. Dimples on a regulation golf ball differ greatly from one golf ball manufacturer to another, as well as the impact they have, depending on dimple alignment and the depth of the dimple depressions.

• Dimple Configuration shown to the left, is an Octahedral 392 dimple configuration and an Icosahedral 432 dimple configuration respectively.
• Golf Ball Dimples Increase Lift and Reduce Air Resistance Dimples marked onto the surface of a golf ball are not simply for decorative purposes.
• Golf ball dimples play a major role in determining the distance traveled by the golf ball.

Two of the principal effects of golf ball dimples are to increase lift and reduce air resistance, which results in longer distances traveled and greater stability in shot trajectory. Although golf ball dimples appear to be all alike to the untrained eye, they do in fact come in a variety of dimple patterns.

Their impacts differ depending on dimple alignment and the depth of depressions. The number of dimples on a ball is also a consequence of alignment and depth. The number of dimples generally range between 350 and 500 dimples per golf ball, their numbers do not significantly affect distance. Ideally, dimples should be spread evenly across the surface of the ball in recurring combinations of one shallow and one deep dimple.

If this cannot be done with precision, golfers will lose distance on their shots, or find them veering to the left or right – even on shots where the ball has been hit squarely on center. Effect of Dimples on Golf Ball Distance and Trajectory The discovery of the effect of dimples on golf ball distance and trajectory was almost by accident back in the mid 1800’s.

It was discovered that golf balls with improperly smoothed surfaces often flew straighter and further than their smooth counterpart. Thus the “Hand Hammered Gutta- Ball” was formed. These golf balls were hammered by hand with a consistent pattern using a sharp edged hammer. Dimples and the Boundary Layer We have known since the mid 1800’s that dimpled golf balls fly much further than smooth golf balls.

The boundary layer is the thin layer of air surrounding a golf ball as it flies through the air. In the boundary layer, the speed of the air varies from where it contacts the air on the surface of the ball (which is not moving relative to the ball), to where it contacts the mainstream airflow, at the outer edge of the boundary layer.

So, just why do dimpled golf balls fly further? Dimpled golf balls travel further than smooth golf balls is because the dimples on a golf ball create turbulence in the boundary layer. This actually helps reduce drag and increase lift. The dimples actually scoop up air and move it back towards the rear of the ball as the ball spins.

By moving more air to the rear, you can – in effect keep the air pressure behind the ball from dropping. By doing this, the amount of air pressure pulling backwards on the ball is decreased creating less drag. Dimple Effect on Golf Ball Trajectory. Golf Ball Dimples Increases Lift On a golf ball hit with back spin, dimples will cause currents of air moving above the ball to move faster, thus lowering air pressure and promoting lift.

Golf Ball Dimples Reduce Air Pressure Dimples facilitate the movement of air to the back of the ball, preventing the reduction of air pressure behind the ball. This lessens the amount of air pressure pulling toward the rear of the golf ball. Golf balls without dimples produce no lift, and fail to travel for any significant distance because they are unable to rise to any significant height in their shot trajectories.

As dimples are made shallower, trajectories tend to rise, while the deeper the dimple the less the trajectory. In order to make a typical golf ball travel up to three times the distance with dimples than without, there is an ideally appropriate dimple depth that must be provided.

## How many dimples does a Titleist Pro V1 have?

The Titleist Pro V1, the most popular Titleist ball, has 388 dimples in its 2021 model. What is this? Interestingly, in previous releases of the Titleist Pro V1, there were only 352 dimples, so something about the new design made Titleist add a few more dimples to the ball. The Pro V1x model has 348 dimples.

## How many dimples does a chrome soft have?

Callaway Chrome Soft Construction – The Callaway Chrome Soft is a 332-dimple ball with a urethane cover. It’s a 3-piece design which is notable if only for that fact that the prior Chrome Soft was a 4-piece design, which is unusual, though not entirely unheard of, in the low compression space. The Callaway Chrome Soft is manufactured in Callaway’s Chicopee, MA ball plant.

#### How many dimples can you find on a Titleist Pro V1x golf ball?

Which Golf Balls Have the Most Dimples? – The number of dimples on a golf ball impact performance. The more dimples on a golf ball, the greater the drag, which leads to a lower trajectory. With this in mind, it’s important to know how many dimples golf balls have before buying. Here are the most common golf balls and their dimple counts:

Titleist Pro V1 – 388 Dimples Titleist Pro V1x – 348 Dimples Titleist AVX – 352 Dimples Titleist Tour Speed – 346 Dimples Titleist Tour Soft – 342 Dimples Titleist Velocity – 350 Dimples Titleist TruFeel – 376 Dimples Bridgestone Tour B X – 322 Dimples Bridgestone Tour B XS – 330 Dimples

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#### What do more dimples on a golf ball mean?

Which Golf Balls Have the Most Dimples? – Dimples directly affect ball flight. The higher the number of dimples on a golf ball, the greater the drag over its surface. And this means a lower trajectory. Thus, more dimples are not necessarily a good thing.

1. Generally, the number is anywhere between 300 and 500 dimples.
2. American golf balls, more often than not, come with 336 dimples.
3. While how many dimples on a British golf ball, they have 330 dimples.
4. As for the highest number of dimples, that would be Ultra 500 Series Golf Balls (500 dimples).
5. Then you also have Nike and Maxfli golf balls with +400 dimples.

In terms of more widely accepted golf balls with comparatively more dimples yet not too high, Titleist Pro V1 (352 dimples) and Titleist Pro V1x (328 dimples) are very popular.

## What ball did Jack Nicklaus use?

Looking back: MacGregor’s golf balls Editor’s note : The following is an exclusive feature that accompanies a story about MacGregor Golf in the Nov.28, 2009 issue of, • • • Jack Nicklaus won in spite of it. Jimmy Demaret swapped it out after his first hole.

1. Ben Hogan just flat-out refused to use it.
2. Unlike MacGregor’s beloved woods and irons, its golf ball was an object of contempt.
3. MacGregor began selling a golf ball under its name, but produced by a third-party prior to World War II.
4. After the war, MacGregor adapted a machine devised to automatically wind baseballs to begin manufacturing its own golf ball.

The decision backfired. According to the company’s unpublished history, “MacGregor: The First 100 Years,” the first plant manager in the new ball department happened to be a heavy drinker, and “mistakes were made with the first batch to market.” MacGregor never recovered from this poor first impression, though the company continued making balls into the late 1980s.

• They sold a better ball at Woolworth’s (discount retail stores),” said Jack Wullkotte, a 20-year veteran clubmaker with MacGregor and Nicklaus’ longtime personal repairman.
• He said several staff players – including Demaret, Mike Souchak and Bob Toski – resorted to trickery to avoid using the ball.
• In order to pass muster with the Darrell Survey report, which tracks equipment usage at professional events, and fulfill their contractual obligation, they teed off with a MacGregor Tourney ball and switched to another brand’s model after they finished the first hole.

(The one-ball rule wasn’t in effect in that era.) Hogan wouldn’t stoop to using the MacGregor ball even that long. The company gave him permission to play another ball until MacGregor felt that its ball was at least equal to the competition, according to Bob Rickey, MacGregor’s vice president of marketing and a company employee from 1946 until 1974, in his manuscript “History of MacGregor.” Improvements were made.

Fellow MacGregor staff pro Jack Burke Jr. won the 1952 Vardon Trophy with the ball. “It went in the hole just fine for me,” Burke Jr. said recently. So with a residue of hope, company officials tried yet again to switch Hogan into their ball. They invited Hogan to MacGregor’s Cincinnati headquarters in early June 1953 before the U.S.

Open. He spent three days there. During his visit, MacGregor offered to sign Hogan to a lifetime deal. There was one caveat: He had to play its ball. Hogan wasn’t easily swayed. He cooperated and observed a variety of tests. A mechanical driving machine called “Iron Byron” blasted shots with the top-of-the-line MacGregor Tourney as well as Hogan’s preferred Titleist model.

• On the last day, MacGregor’s president pressed Hogan for an answer and asked if the driving machine had persuaded him that the Tourney was suitable for his use in tournament play.
• Up to this time, Ben had uttered nothing more than a grunt the entire three days,” Rickey wrote.
• What happened next is part of Hogan lore.

Tom Weiskopf, who signed with MacGregor in 1964 and played the same set of its irons for 17 years, picks up the story recorded by Rickey: “Hogan took his time as he often did. He puffed on his cigarette. Then he replied, ‘If you think that driving machine can hit a ball straighter than me, I suggest you enter it in the U.S.

1. Open.’ ” Hogan walked off and never renewed with MacGregor.
2. He won the U.S.
3. Open that year, using a Titleist Acushnet DT ball No.4, and followed with a victory at the British Open to complete the Hogan Slam.
4. After playing out the final year of his MacGregor contract, he resigned rather than play a ball unfit to his exacting standards.

One year later, Hogan started his own golf equipment company. LINK : Hogan wasn’t the lone staffer who considered the MacGregor ball to be inferior. According to Rickey, Demaret, Doug Ford and Dow Finsterwald all resigned from MacGregor on the eve of the 1957 Masters rather than accept an ultimatum to “play the Tourney or else.” That week, Ford slipped on the Green Jacket after using a Dunlop Maxfli.

1. In the years that followed, MacGregor leaned heavily on Nicklaus’ success to persuade golfers that the Tourney was a superior ball.
2. For a dozen years, the company sold Nicklaus golf balls in bulk to Firestone Tire for it to use in a variety of promotions.
3. MacGregor ran its own contests as well, giving consumers and club pros the chance to win new cars or trips to the Masters.

It provided handsome bonuses for its salesmen. But try as it might, MacGregor couldn’t sustain sales success with its ball. “It appears more dollars and effort were spent with less return on the golf ball in the Sixties than any other (MacGregor) product at any time,” Rickey wrote. Jack Nicklaus used a MacGregor ball for all of his 18 major victories. For all its shortcomings, a MacGregor ball was used by Nicklaus for his 18 major victories. But that didn’t mean he, too, didn’t voice his displeasure with the ball at times. Wullkotte recounted the story of the time Nicklaus returned from competing in the 1975 Hawaiian Open and met with the MacGregror ball staff to approve an upcoming ball line.

• Before they could get started, Nicklaus interrupted and assigned them a more urgent task, according to Wullkotte.
• Nicklaus told MacGregor’s staff that he was dumbfounded when Tom Shaw and Art Wall Jr., two notorious short hitters on Tour, outhit hit him by 15 yards during a practice round.
• When Nicklaus hit one of Shaw’s Titleist balls, he regained his edge.
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Nicklaus, according to Wullkotte, threatened: “If you don’t have a better ball for me to play by the Masters I’m going to play the Titleist.” The MacGregor R&D team hopped on the task and reconfigured the ball ahead of Nicklaus’ deadline. Shortly before the Masters, Nicklaus was paired with fellow long bomber Jim Dent.

Nicklaus outdrove him all day. Wullkotte chuckled, recalling Dent’s punchline: “Looks like they got that mother fixed, huh Jack?” Perhaps the most damning evidence of the MacGregor golf ball’s inferiority comes from Frank Thomas, who for 26 years directed testing of all golf balls used in competition as the USGA’s technical director.

To make sure the balls used on Tour were the same as those originally submitted for the conforming ball list, Thomas collected sleeves of balls from Nicklaus and Weiskopf for testing at the 1977 U.S. Open at Tulsa’s Southern Hills Country Club. When Thomas put the Tourney through its paces on “Iron Byron” at the USGA’s test center in New Jersey, he said the MacGregor ball veered 2-3 yards to the left; the next one turned a little more; and some moved as much as 15 yards off target.

Having never before seen such an inconsistent ball flight, Thomas stopped the test. “I thought something must be wrong with ‘Iron Byron,’ ” Thomas said recently in a telephone interview. But the machine operated properly, and the results of MacGregor’s re-test were identical. At the 2000 U.S. Open at Pebble Beach, following Thomas’ retirement, he revealed to Nicklaus the startling results of the ’77 test.

Nicklaus told him he wasn’t surprised. “He knew it wasn’t a very good golf ball,” Thomas said. “It just shows how good he really was. I truly believe he would’ve won several more majors if he had played a better ball.” : Looking back: MacGregor’s golf balls

### What do the dimples on a golf ball reduce?

June 01, 2016 Posted in: Golf Education, STEM, The Bridge Golf Foundation By Tiffani Kolozian, STEM co-teacher We used no-dimple golf balls like this one in our experiment. Last week at Dunwoodie Golf Course, we compared the flight of completely smooth golf balls to normal balls with dimples. For our experiment, the students noted that the independent variable was the type of ball — with dimples or without.

• The no-dimple balls were supplied by the USGA, which uses them at its Research and Test Center in Far Hills, NJ.) The students also decided that their dependent variable would be carry, or how far the ball flew.
• Our controls were clubhead speed, the club we used, wind speed, and the mat the ball was hit from.

Of course these controls were not exact as the the wind was always changing, and Teaching Professional Brian Hwang, as good as he is, cannot hit every shot exactly the same. But the conditions and his swing were consistent enough to show that the type of golf ball made a huge difference.

1. After watching Brian hit a series of 8-iron shots with both types of ball, our students easily concluded that a golf ball without dimples did not go nearly as far as a ball with dimples, and flew with a different trajectory.
2. After our experiment, we talked about how dimples work and learned that they affect two crucial aspects of aerodynamics — drag and lift.

First, dimples allow air to flow more smoothly around a ball’s surface, which decreases the wake and low-pressure area behind the ball, resulting in less drag. Second, the dimples increase lift by causing the air to move faster at the top of the ball, creating lower pressure there.

## Why is Titleist Pro V1 so popular?

Pros of Titleist Pro V1 Golf Balls – Source: Titleist

Very low long-game spin with a mid-flight pattern that carries the ball to the exact place you target. Very low short-game spin for all your putts, chips, and pitches. It has a uniform 2.0 ZG Process core that makes the shot more predictable. Spherically-tiled 388 dimple design casing that allows for strong, fast, and straight flight patterns. The soft exterior casing provides a sturdy and firm feel when the club hits the ball. Durability that will last for up to five years and, in some cases, even more.

### How many dimples are on a TaylorMade TP5?

It’s one of the most common golfing questions that get thrown around from time to time: how many dimples are found on a golf ball? While there is no one-size-fits-all answer, you will typically see anywhere between 300 and 450 dimples on a new premium golf ball in 2021.

• When it comes to our favoured TaylorMade TP5 golf ball here at GolfMagic, you will find 322 dimples.
• However, throw it over to another popular golf ball such as the Callaway Chrome Soft, and you get 332 dimples.
• On the new Vice Pro Plus, you will see 336 dimples, while on Tiger Woods’ Bridgestone Tour B XS ball there are 330 dimples.

The Titleist Pro V1 ball consists of 352 dimples. You can therefore see that most of the biggest balls in golf today feature around the 320 to 350 dimple mark. But you can go through just about every golf ball ever made over the past 10 years and find a differing number of dimples compared to the next branded golf ball – so in short, all golf balls feature different numbered dimples.

### Does Pro V1 spin more?

“Pro’s” of the Titleist Pro V1 Ball – The Titleist Pro V1 will provide a more penetrating ball flight, a softer feel, more spin green side, and low long game spin. Depending on the type of golfer you are, your answers to the following questions should help determine if the Pro V1 is the right golf ball for you!

1. Do you struggle with too much spin or height on drives or long approach shots?
2. Do you enjoy a very soft feel with your golf ball?
3. Do you struggle with wind? The penetrating trajectory of the Pro V1 can help.
4. Would more spin on short irons and short approach shots benefit your ability to score?
5. If you’re steep with your wedges or create a ton of backspin and are tired of hitting greens and then spinning off of them, the lower spin rate of the Pro V1 on short irons and shots around the greens may really benefit you.

If your answer was yes to any or all of the questions above, please try the Titleist Pro V1 golf ball. Adam Scott found he was able to use the Titleist Pro V1 to hit high spinny shots like he could with the older Balata balls he grew up playing with. Scott also found the Pro V1 compliments his ball speed on longer shots helping him find more fairways than what he was previously playing.

#### Do any pros play Chrome soft?

Which Tour Players Are Using Callaway Chrome Soft X Balls? Source: image.globalgolf.com The Callaway Chrome Soft X Ball is pretty popular among the top PGA Tour Players right now with 10 tour pros currently carrying it in their bag, including Jon Rahm, Xander Schauffele, and Sam Burns, According to the PGAClubTracker.com database, that puts the Callaway Chrome Soft X Ball at the #3 Most Popular Ball model on the PGA Tour.

Player In the Bag On:
Emiliano Grillo May 2023
Phil Mickelson May 2023
Jon Rahm April 2023
Sam Burns March 2023
Siwoo Kim January 2023
Danny Lee November 2022
Alex Noren July 2022
Xander Schauffele June 2022
Marc Leishman March 2022

#### How many golf balls fit in a school bus interview question?

Divide that 2.5 cubic inches into 1.6 million and you come up with 660,000 golf balls. However, since there are seats and crap in there taking up space and also since the spherical shape of a golf ball means there will be considerable empty space between them when stacked, I’ll round down to 500,000 golf balls.

### Do Pro V1 balls go further than Pro V1x?

Pro V1x Players – Players who fit into Pro V1x prefer its firm feel (relative to Pro V1) and benefit from its higher flight, higher spin rate, steeper descent angle into the green and the combination of longer carry distance and shorter roll that it typically provides off the tee. Pro V1x will also fit a wide array of playing styles and course conditions, but it may be the right choice for you if.

You tend to hit the ball lower than you would like. Your iron approach shots tend to release out more than you desire. You typically play on courses with many forced carries. You typically play on courses with soft conditions, where the ball doesn’t roll out much. You prefer a firmer feeling golf ball.

A closer look at the feedback from our fitting experts shows that golfers are unique. We have very different needs and preferences. And we need different golf balls. The golf ball is not a one-size-fits-all proposition and that’s why we developed two models – Pro V1 and Pro V1x.

Mike Rich is Titleist’s Director of Golf Ball Fitting & Education, and as he explained, “Pro V1 and Pro V1x differ with regards to three key criteria – flight, spin, and feel, These are the key performance aspects that you should consider when determining the best ball for your game. When you select the model with the right flight, spin, and feel, you’ll see gains in control, distance, and accuracy.

You’ll hit more consistent shots that finish closer to your targets. You will increase your chances to play your best and shoot your lowest scores.” Before you stock up on V or X this season, check out the following comparison guide and learn a little more from Mike about the new Pro V1 and Pro V1x golf balls. “Pro V1 is our flagship product and sits as the centerpiece of our premium performance line,” Mike Rich said. “The new 2023 Pro V1 provides optimal flight for the majority of golfers we fit. Pro V1x will fly higher and achieve peak height farther downrange. This results in greater carry distance, a steeper angle of descent and less roll than Pro V1.” • • • “Both the new Pro V1 and Pro V1x feature new high gradient core technology,” Mike said. “This advancement lowers the spin rate of both models, particularly with the driver and on your long game shots. For both models, this results in greater distance. That change, however, has not affected the relative spin relationship between V and X. “Pro V1 features soft, responsive feel that is now legendary in the game,” Mike told us. “Both Pro V1 and Pro V1x utilize our proprietary cast urethane cover material, but we designed Pro V1x to provide a slightly firmer feel than Pro V1, which many players prefer.

• While feel doesn’t affect performance, many players prioritize feel and it can often serve as a tie-breaker in choosing which ball to play.” ••• To find the right ball for your game, your best bet is to attend a Titleist golf ball fitting event and get fit by one our golf ball fitting experts.
• If you can’t attend a fitting event, your next-best option is to visit our Golf Ball Fitting & Education Resources, where you can schedule a live, one-on-one virtual golf ball consultation with a member of the Titleist Golf Ball Fitting team and access the Titleist Golf Ball Selector Tool.

Click here to order New 2023 Pro V1 and Pro V1x golf balls. #TeamTitleist

## How many golf balls does a pro use?

How many golf balls do professional golfers carry? – Pro golfers don’t carry nearly as many golf balls as amateurs do. Most pros carry 3-4 sleeves in their bag as they constantly replace them during the round. It’s very common for them to go through 4-5 balls even if they don’t lose them. If they get scuffed from anything they will throw them to the crowd or even sign them and give them to fans.

## Does a Pro V1 spin more than a Pro V1x?

Both models, the Pro V1 and the Pro V1x are very similarly designed. The Pro V1x delivers a firmer feel and higher trajectory with more spin.

#### Why don t cars have golf ball dimples?

Why are vehicles not pitted like golf balls? It has to do with size. For small and slow-moving objects, viscous forces have more weight in comparison to inertial forces. Also, the layer of air close to the surface of an object which moves through air is differently structured.

#### Do the dimples on a golf ball increase drag?

Golf ball dimples reduce drag by creating a turbulent boundary layer flow around the ball. The boundary layer is defined as a thin layer of fluid dragged by the ball. By creating this turbulent boundary layer, the separation point decreases.

## How common are mouth corner dimples?

20 – 25% of people with dimples are those with mouth corner dimples. Due to the hidden charm of these features and the belief in luck in physiognomy that many want to have themselves the mouth corner dimples. Nowadays, in just 15 minutes of dimpleplasty using Korean technology, you can have the most beautiful and most natural dimples.

#### How many dimples are there on a Titleist Pro V1 golf ball 18?

Long Game – In the short game, neither the Pro V1 nor Pro V1x changed much from their previous incarnation. The focus, instead, was on dropping some spin in the long game. Titleist achieved this with the use of a “high gradient core” (a dual core in the Pro V1x).

1. In my testing, I saw slightly lower spin from both models throughout the long game.
2. The gap was not very large – a couple hundred RPM at most – but no one should expect a radical change to the #1 ball in golf.
3. It’s also worth noting that I’m a low spin player, so higher spin golfers may see a larger difference from the previous generation.

Finally, there is a difference in the dimple pattern of the two balls. The Titleist Pro V1 uses a “spherically-tiled 388 tetrahedral dimple design”. In contrast, the Pro V1x uses 348 dimples. Per Titleist, this difference helps the Pro V1 to achieve a penetrating flight and the Pro V1x to fly higher,

### How many balls do you need for 18 holes?

Most amateur golfers will be fine bringing nine golf balls with them for a rough of 18 holes. Some will like to keep a dozen balls in the bag, and that is fine, although it is rarely necessary.

### What do the dimples on a golf ball reduce?

June 01, 2016 Posted in: Golf Education, STEM, The Bridge Golf Foundation By Tiffani Kolozian, STEM co-teacher We used no-dimple golf balls like this one in our experiment. Last week at Dunwoodie Golf Course, we compared the flight of completely smooth golf balls to normal balls with dimples. For our experiment, the students noted that the independent variable was the type of ball — with dimples or without.

• The no-dimple balls were supplied by the USGA, which uses them at its Research and Test Center in Far Hills, NJ.) The students also decided that their dependent variable would be carry, or how far the ball flew.
• Our controls were clubhead speed, the club we used, wind speed, and the mat the ball was hit from.

Of course these controls were not exact as the the wind was always changing, and Teaching Professional Brian Hwang, as good as he is, cannot hit every shot exactly the same. But the conditions and his swing were consistent enough to show that the type of golf ball made a huge difference.

After watching Brian hit a series of 8-iron shots with both types of ball, our students easily concluded that a golf ball without dimples did not go nearly as far as a ball with dimples, and flew with a different trajectory. After our experiment, we talked about how dimples work and learned that they affect two crucial aspects of aerodynamics — drag and lift.

First, dimples allow air to flow more smoothly around a ball’s surface, which decreases the wake and low-pressure area behind the ball, resulting in less drag. Second, the dimples increase lift by causing the air to move faster at the top of the ball, creating lower pressure there.