2011년 1월 26일 수요일

Seeing more than your eye does

Most people (even many who work on the brain) assume that what you see is pretty much what your eye sees and reports to your brain. In fact, your brain adds very substantially to the report it gets from your eye, so that a lot of what you see is actually "made up" by the brain.
Some special features of the anatomy of the eyeball make it possible to demonstrate this to yourself. The front of the eye acts like a camera lens, differently directing light rays from each point in space so as to create on the back of the eye a picture of the world. The picture falls on a sheet of photoreceptors (red in the diagram), specialized brain cells (neurons) which are excited by light.



The sheet of photoreceptors is much like a sheet of film at the back of a camera. But it has a hole in it. At one location, called the optic nerve head, processes of neurons collect together and pass as a bundle through the photoreceptor sheet to form the optic nerve (the thick black line extending up and to the left in the diagram), which carries information from the eye to the rest of the brain. At this location, there are no photoreceptors, and hence the brain gets no information from the eye about this particular part of the picture of the world. Because of this, you should have a "blind spot" (actually two, one for each eye), a place pretty much in the middle of what you can see where you can't see.

Look around. Do you see a blind spot anywhere? Maybe the blind spot for one eye is at a different place than the blind spot for the other (this is actually true), so you don't notice it because each eye sees what the other doesn't. Close one eye and look around again. Now do you see a blind spot? Hmm. Maybe its just a little TINY blind spot, so small that you (and your brain) just ignore it. Nope, its actually a pretty BIG blind spot, as you'll see if you look at the diagram below and follow the instructions.



Close your left eye and stare at the cross mark in the diagram with your right eye. Off to the right you should be able to see the spot. Don't LOOK at it; just notice that it is there off to the right (if its not, move farther away from the computer screen; you should be able to see the dot if you're a couple of feet away). Now slowly move toward the computer screen. Keep looking at the cross mark while you move. At a particular distance (probably a foot or so), the spot will disappear (it will reappear again if you move even closer). The spot disappears because it falls on the optic nerve head, the hole in the photoreceptor sheet.

So, as you can see, you have a pretty big blind spot, at least as big as the spot in the diagram. What's particularly interesting though is that you don't SEE it. When the spot disappears you still don't SEE a hole. What you see instead is a continuous white field (remember not to LOOK at it; if you do you'll see the spot instead). What you see is something the brain is making up, since the eye isn't actually telling the brain anything at all about that particular part of the picture.

[Source] Serendip

당신의 맹점(Blind Spot) !!

우리가 자신하는 감각과 지각의 불완전함을 맹점(Blind spot) 시뮬레이션을 통해 경험하게 하는 내용으로 직접 체험해 보시길...



1단계: 모니터에서 25cm정도 떨어진 상태에서 왼쪽 눈을 감은채 오른쪽 눈으로 십자가 표시 보기
2단계: 화면으로 다가가면 오른쪽 검은 원이 사라짐

[출처1] 당신의 감각은 당신을 배반한다 [쿠바시가의 골프이야기]
[출처2] Blind Spot

2011년 1월 8일 토요일

Do It Yourself (iPhone 거치대 제작기)




[출처] www.jtmg.co.kr

Best iPhone Bicycle Mounts For Outdoors

So you want to take your iPhone with you outdoors on your bike? Maybe you just want to take your iPhone and use it as your GPS. Whatever the case, you are going to need a solid mount to keep your iPhone safe and sound while you keep your eyes on the road. And if you are anything like me, you don’t want to spend a fortune on your bike mount either. With that in mind, here are 6 high quality, affordable bicycle mounts for iPhone:

PED3-Bike-FORM for iPhone or iPod touch: if you have owned their vertical stand for iPhone, you probably know their products are of high quality. PED 3 bike mount rotates 360 degrees, is very easy to install, and is very solid as well.



[Source] www.iphoneness.com

Spiderpodium

Spiderpodium is arguably the best travel dock available on the market today and certainly the most useful accessory suited to smartphone to smartphone video conferencing such as FaceTime on the new iPhone 4.





The products flexible nature allows for Spiderpodium to position a phone at virtually any angle, in any position, in any location! This makes Spiderpodium the ultimate accessory for video conferencing without restriction!

[Source] www.breffo.com

Silicone bandage easy bands

The anguish of small objects can not be installed on the bike do? With the high elastic silicone easily tied to lamp post, whether bicycle, code tables, tire repair kits, tools, pump, bottle holder, cell phone ... ... and so on have encountered any small items Easily installed on the bike !





[Source] www.alibaba.com

Golf Swing Tempo Training

Watch the Puttronome Movie. See how listening to the Puttronome file that best matches your Core Tempo will help you attain distance control. Since most amateurs make ~75% of putts at 3 feet and only 40% of putts from 6 feet, it is critical to get the first putt within 3 feet!. In order to get the first putt within 3 feet, you must have good distance control! Listen to the Puttronome file on your MP3 player while putting. Vary your backswing and followthrough length while holding your tempo constant, then, you'll sharpen your distance control. The Standard Puttronome set consists of the following tempos in beats per minute: 72, 75, 78, 82, 86, 90, 95, 100, 106, 112, 120, 129. Buy the set for only $14.95.

[Source] http://dxptech.com

[MFS News] 퍼터 피팅장비 Sam Putt 도입

맞춤클럽의 명가 MFS Korea에서 이제 퍼터도 피팅할 수 있습니다.
퍼터 피팅 및 교정의 최첨단 장비 독일산 "Sam Putt"을 도입하여 퍼터피팅을 가능케 하였습니다.

+ 장비의 기술적 특징 +
Sam Putt Lab은 극도로 정확한 초음파 측정방식을 채택하고 있습니다.
Sam Putt Lab은 Player로 하여금 실시간으로 Putting Stroke에 관련된 정확한 28개의 Parameters(Putter Face Angles, Face Rotation, Swing Path, Impact Spot, Swing Time Dyration 또는 Stroke Rhythm)에 관련된 Feedback을 제공해 줍니다. 모든 결과 값은 명확하고 이해하기 쉽게 그래픽 형식으로 제공됩니다.

+ 중요특징 +
1. 사용의 용이성
2. 빠른 Set-Up 및 Calibration
3. 자동측정 및 분석
4. 28항목의 평가내용
5. 다양한 항목측정에 대한 그래픽 출력 강/약의 일치
6. 훈련모드에서의 즉각적인 Feedback
7. PGA Tour 선수들과의 비교
8. 10분 이내의 모든 분석 수행
9. 휴대용 장비케이스

MFS맞춤골프클럽에서는 Sam Putt 퍼터 피팅장비를 2009년 8월 31일까지 무료로 체험하실 수 있습니다.



- PGA 투어에서 퍼팅교정 모습 -


- Sam Putt 장비의 구성 모습 -


- Sam Putt 본체와 교정을 위해 퍼터에 장비 붙착모습 -


- Sam Putt 활용 시 컴퓨터 모니터 화면 -

[Source] www.mfsgolf.com

What is a “SAM PuttLab”




SAM PuttLab is an analysis and training system based on an accurate ultrasound measurements. It analyzes the 28 most important parameters of your putting stroke and displays the results in easy to understand graphic reports. Discover your individual strengths and weaknesses for a better and more efficient training.

Within seconds the system gives you an individual feedback on your putting strokes. The analysis reveals even the smallest details of your movements and allows you to develop improvements and training strategies. SAM PuttLab utilizes ultrasound sensory analysis and therefore is far more exact than any other similar system on the market.

Together with international PGA Tour Pros the scientists of Science&Motion have developed SAM PuttLab for golfers of all handicaps - guaranteeing high efficiency and usability of the device. To date already 26 European and American Tour Professionals and several European national teams trust the capability of Science&Motion's PuttLab. PuttLab is a system with ascertainable success .

•Worldwide first system for complete putting analysis
•Sensational training success on the European PGA Tour in 2004 and 2005
•Easy to use, direct results and immediate feedback
•Reference results of PGA Tour pros create fast success
•Whether in the office or on the golf course – Putt allows training at any time and in any weather

[Source] www.scienceandmotion.com

Golf Pro Putting Secrets - Know Your Rhythm!

Mike Shannon

[Source] www.golfersmd.com

The Secret to Putting Rhythm

By Alan L Hammond

Golfers use their putter more than any other club in their golf bag during a round of golf, however, putting is one of the least effectively practiced parts of their game. Mike Shannon, putting instructor at Sea Island Golf Learning Center, and considered by many to be the world's best putting instructor, has some great advice regarding establishing a repeatable putting stroke.

According to Shannon, establishing a consistent rhythm to the putting stroke is essential. For every golfer, speed is everything in putting. Says Shannon, "When you talk about speed, you have to talk about the rhythm of the putting stroke." To establish an individual's rhythm, a simple drill is in order. One that makes use of a metronome.

Establishing a Rhythm

According to Shannon, "Ninety percent of all the (tour) players have a rhythm of 76 beats per minute." All tour players, says Shannon, have a rhythm of between 72 and 80 beats per minute (bpm) with a metronome.

A golfer can establish his or her rhythm using a metronome by putting 12 or so balls to a cup that is approximately 25 feet away. Set the metronome to 76 bpm, clip the metronome to a pocket, and practice putting to the cup in time with the metronome. As Shannon demonstrates, the putting stroke will consist of starting with one tone of the metronome and impact the ball at the next tone.

After putting the 12 balls a few times, says Shannon "most of your balls should be in a pattern." Most of them will be in a two to three foot radius somewhere around the cup.

"If most putts are right around the cup, then 76 beats per minute is right for you. If several are past the hole, three, four or five feet, 76 bpm is too slow, giving you too much time to make the stroke, so turn the metronome up to 77 or 78 bpm. If the pattern is short of the cup, then 76 bpm makes your stroke too short, so turn the metronome down." (GolfersMD.com)

Once the optimal putting rhythm is established using the metronome, more consistency will be achieved. For putts of differing lengths, although the putting stroke will be either longer or shorter, the rhythm that is established will not change. According to Mr. Shannon, "For good distance control and good speed control, get your metronome and do some work."

Mike Shannon has been recognized as a top teacher by both Golf Digest and Golf Magazine.

Alan L. Hammond is a golf and tennis health and fitness writer for the http://www.SportsMD.com family of websites. He is also the publisher of http://www.SonlightLex.com, a faith-based site established to support local charities.

[Source] EzineArticles.com

Control chart

From Wikipedia, the free encyclopediaJump to: navigation, search
Control chart

One of the Seven Basic Tools of Quality
First described by Walter A. Shewhart
Purpose To determine whether a process should undergo a formal examination for quality-related problems

Control charts, also known as Shewhart charts or process-behaviour charts, in statistical process control are tools used to determine whether or not a manufacturing or business process is in a state of statistical control.



Overview
If analysis of the control chart indicates that the process is currently under control (i.e. is stable, with variation only coming from sources common to the process) then data from the process can be used to predict the future performance of the process. If the chart indicates that the process being monitored is not in control, analysis of the chart can help determine the sources of variation, which can then be eliminated to bring the process back into control. A control chart is a specific kind of run chart that allows significant change to be differentiated from the natural variability of the process.

The control chart can be seen as part of an objective and disciplined approach that enables correct decisions regarding control of the process, including whether or not to change process control parameters. Process parameters should never be adjusted for a process that is in control, as this will result in degraded process performance.[1]
The control chart is one of the seven basic tools of quality control.[2]

[Source] wikipedia

Inside iPhone 4: Gyro spins Apple ahead in gaming

By Daniel Eran Dilger
Published: 09:50 PM EST



Apple appears to have inadvertently discovered mobile gaming as a killer app for the iPod touch last year, but iOS 4's Game Center and the new iPhone 4's new gyroscope indicate the company is ready to lead mobile gaming as a competitive opportunity.

On stage at WWDC, chief executive Steve Jobs was expected to have little new to show about iPhone 4, given that a prototype version had been stolen and publicly dissected weeks before the event. Fortunately for Apple, most of its key details weren't grasped by the prototype's leakers.

Nothing about the new Retina Display was leaked apart from the fact that the new phone appeared to have a much higher resolution display, something everyone expected anyway. Leaks only assumed the presence of an A4 brain and faster 802.11n WiFi. Additionally, nobody guessed that the stainless steel shell would double as an antenna system for WiFi, Bluetooth, GPS and 3G. The leak also didn't anticipate any details of Apple's standards-based FaceTime video calling.

The biggest secret however might have been the new phone's gyroscope, a feature that beat to market the fancy phones from Nokia's Symbian and Google's Android. Few who bought into Android phones from Verizon and Sprint over the past six months will be ready to pay up to $350 in early termination fees just to grab the next gyro-equipped models one they eventually come out. Microsoft has also admitted that it won't be ready to support gyros or digital compasses in Windows Phone 7 at its end of the year launch.

That makes Apple's gyro introduction, tied to the mega-launch of the new iPhone 4, a big deal in terms of differentiating Apple's platform. Jobs' announcement of the new gyroscope feature generated an enthusiastic, instantaneous whoop from a few developers at the WWDC keynote who understood what it meant. For everyone else, Jobs had a demonstration planned involving a 3D Jenga-style game that allowed for an entirely new type of motion feedback.

[Source] www.appleinsider.com

iPhone 4 Gyro – Improve Your Golf Swing

iPhone 4 Gyro – Improve Your Golf Swing
by Mr. Waltz on June 8, 2010



We have earlier written a post on iPhone 4.0 Features and we are all aware how iPhone introduced a load of new options including iMovies. The coming iPhone is poised to become a game changer altogether. Just read that introduction of Gyro can help you in your Golf Swing in the process making you a better golfer ! just strap the iPhone4 to your body and have it register all the movements you make with great precision and detail. This would plot you the swing and you will be able to know where the swing is going wrong. This would certainly be more useful for 18 handicapers i guess ! but on the larger scale it could mean a whole lot of Apps for your next iPhone 4.0

Imagine a golf-swing coach that you attach to your club, which tells you just where your swing is going wrong and what you can do to fix it. Or strap your iPhone 4 to a special harness, which then guides you through a series of yoga postures and tells you–breath–if you’re getting it right.

Moreover, there could be a new breed of apps that assists medical professionals to monitor an injured person’s gait, for example–and their progress during physical rehab.

[Source] www.technama.com

거리조절은 리듬과 템포

리듬과 템포

[퍼팅솔루션]에서 소개하는 인투인 진자운동에 의한 퍼팅이 아니더라도 리듬과 템포는 퍼팅에 있어서 중요한 요소이다.
퍼팅은 물론, 일반 골프 스윙에서도 리듬과 템포는 항시 거론되는 화두이다.
앞에서 말한 대로 골프 스윙과 퍼팅 스트로크와는 아무런 연관이 없지만 리듬과 템포를 중요시한다는 점은 같다.

리듬은 퍼팅 일관성과 방향을 위한 전제이고, 템포는 일관성과 거리 조절을 위한 전제이다.
리듬은 일정한 템포 내에서 이루어져야 하며 템포는 일정한 리듬을 가져야 하기에 리듬과 템포는 상호 유기적인 관계이다.

|자연스러운 리듬|
리듬은 흐름이라는 어원에서 비롯된 단어이다.
물 흐르듯 반복해서 움직이는 가운데 존재하는 규칙으로 글로 설명하기 어려운 부분이다.
똑같은 동작을 하면서도 리듬이 있고 없음은 확연히 구분된다.
필자는 이것을 자연스러움이라고 표현하고 싶다.



자연스러운 퍼팅 리듬을 갖기 위해서는 반복 연습만이 유일한 해결책이다.
반복 연습을 통해 어색하지 않은 자연스러운 리듬을 퍼팅에 녹아 들게 해야 한다.
퍼팅 시 헤드 속도는 임팩트 순간에 최고 속도를 가져 야 한다.
마음속으로 백 스윙 시 하나, 다운 스윙부터 임팩트를 거쳐 팔로우까지를 둘로 세며 자신만의 리듬을 익혀야 한다.
그러나 이러한 리듬도 일정한 템포 안에서 반복되어야 한다.
리듬과 템포가 일정한 골퍼는 그렇지 못한 골퍼에 비해 흔들림이 없는 일관성을 갖는다.

|일정한 템포|
리듬에 비해 템포는 좀 더 엄격한 제한이 필요하며 역시 반복된 연습을 필요로 한다.
템포에 대한 정의는 골프 스윙 시 템포의 정의와 동일하다.
어드레스 후, 백 스윙을 시작하기 위해 움직이는 순간부터 임팩트 순간까지의 시간이다.
이 시간을 템포라 한다.

참고로 골프 스윙에 있어 드라이버 샷의 경우, 템포는 0.8초부터 1.8초 정도이다.
투어 프로 경우는 0.8초부터 1.2초 정도로 차이가 작은 반면에 아마추어의 경우는 1.0초부터 1.8초로 골퍼에 따라 드라이버 샷의 템포 폭이 크다.
물론 골퍼 체격이나 운동의 수행능력, 특히 임팩트 시헤드 스피드에 따라 권장하는 템포는 존재한다.
퍼팅에 대해서는 어떠할까?



결론부터 얘기하면 퍼팅 시 일반적인 템포는 1.5초 내외로 보면 된다.
물론 극단적으로 짧은 퍼팅이거나 긴 퍼팅을 하는 경우는 예외로 할 수 있다.
그러나 일반적인 퍼팅 경우라면 가급적 위에서 제시한 시간 범주내에서 자신이 정한 템포를 지켜야 한다.
피아노를 치면서 박자를 맞추기 위한 도구로 사용하는 메트로놈이 있다.
시계추 진자운동으로 박자를 맞추는 음악 연습 도구이다.
퍼팅 템포를 맞추는 데에도 효과적인 도구이다.
자신에게 적합한 템포를 가급적 1.5초 내외에서 찾아 정형화시킨 후 템포 연습을 해야 한다.
마음속으로라도 똑딱 똑딱 템포를 지키며 익숙해질 때까지 반복 연습을 해야 한다.

|거리조절은 리듬과 템포로|
퍼터 헤드의 움직임 폭이 바뀌어도 템포가 일정하도록 반복해서 연습 해야 한다.
그 동작이 자연스럽게 익숙해지면 자신이 느끼는 고유 리듬이 생긴다.
이것이 퍼팅에서 템포와 리듬의 완성이다.
여기서 주의해야 할 것은 퍼팅 거리에 따라 즉, 퍼터 헤드 움직임 크기와 상관없이 본인 이 정한 템포를 지켜야 한다는 점이다.
템포의 일정함은 거리 조절의 핵심이다. 일정한 템포 속에서 헤드의 움직임 정도에 따라 거리가 조절된다.
백 스윙 크기로 퍼팅 거리를 조절하는 것이다.
템포와 리듬을 완성하면 백 스윙 크기에 따라 놀라울 정도로 거리를 정확히 조절할 수 있는 인투인 진자운동의 장점을 경험한다.
백 스윙 크기를 무시한 채 임팩트의 힘만으로 거리를 조절하는 것은 어려운 일이다.
30야드부터 100야드까지 스윙 크기를 똑같이 하면서 힘으로 조절해 피치 샷을 하겠다는 것과 다르지 않다.



[출처] 골프스카이

Putt In Rhythm

Putt In Rhythm



A square putterface and a straight-back, straight-through path are crucial fundamentals for a solid stroke. These two elements control direction, which is undeniably one of the two most important aspects of good putting. However, perhaps the most important fundamental, rhythm, is often overlooked. Rhythm establishes the steadiness of the putting stroke and is the main factor in controlling distance and speed. Rhythm is the heartbeat of a good stroke, and is at least as important, if not more so, than any other aspect of successful putting.

Regardless of whether your tempo is fast or slow, the clubhead should move at a constant pace going back and coming forward. If your putting stroke accelerates too quickly or decelerates abruptly at impact, it’s extremely difficult to control the distance of the putt. A stroke made in this manner is easy to identify because the backstroke and followthrough are different in speed and length. The sure sign of a stroke with good rhythm is one where the backstroke and followthrough move at the same speed and are of equal lengths.

A stroke with good rhythm is often described as a “pendulum” stroke. However, this term implies that the putter swings itself from a fixed point. Instead, it would be more appropriate to think of the stroke as being powered by the arms and shoulders while the putter is kept from swinging on its own. When the arms and shoulders control the putter, good rhythm is much easier to achieve because there’s no independent motion of the putterhead. Focusing on moving the arms and shoulders (while controlling the putter) at the same speed and the same distance back and through will ensure solid contact and consistent control over the distance of your putts.

PGA teaching professional Brady Riggs instructs at Woodley Lakes GC in Van Nuys, Calif. For more information on Riggs and his instruction programs, visit www.bradyriggs.com.

[source] www.golftipsmag.com

[퍼팅솔루션] 43이라는 숫자에 주목하자!

"43이라는 숫자에 주목하자"

■ 공의 직경은 43mm이다.
골프는 매 홀 티잉 그라운드에서 출발하여 직경 43mm의 공을 직경 4.3인치(108mm)의 홀에 넣음으로써 마무리되는 게임이다. 공을 홀에 넣지 않고는 마무리가 되지 않는다.
마무리가 전제되지 않는 출발이나 과정은 존재할 수 없다.
"아마추어는 티잉 그라운드에서 홀에 이르는 연습을 하고, 프로는 홀에서부터 티잉 그라운드에 이르는 연습을 한다." 는 표현은 프로가 퍼팅 연습에 얼마나 정성을 쏟고 있는지를 강조하는 표현이다.



공의 두 배가 넘는 직경을 가진 홀에 공을 넣는 퍼팅은 어려울 수 있지만 언제 어느 위치에서든 성공 가능한 시도이다. 퍼팅 원리를 제대로 이해하고 이를 바탕으로 올바르게 연습하는 것만이 퍼팅의 성공 확률 을 높일 수 있는 유일하고 당연한 지름길이다.

■ 골프스코어의 43%는 퍼팅이다.
스코어상으로 100타를 치는 골퍼는 43타, 70타를 치는 골퍼라면 30 타 정도가 퍼팅 스트로크에 의한 점수이다. 결코 가볍게 지나칠 수 없 는 비중이다.
누구나 잘할 수 있는 퍼팅이지만 누구도 쉽게 정복할 수 없는 것이 바로 퍼팅이다.
퍼팅에 대해 이론으로 무장하고, 올바른 방 법으로 충분히 연습하지 않으면 결코 스코어를 줄일 수 없다.
퍼팅은 골프의 여러 요소 중 연습의 피드백이 가장 크다. 연습 시간에 비례해 스코어의 향상을 가장 크게 기대할 수 있는 종목이다. 올바른 퍼팅 원리를 이해 하고 이를 바탕으로 효과적인 연 습을 한다면 퍼팅은 크게 개선될 것이다. 그저 그날의 운이나 감으로 돌리기엔 퍼팅이 스코어에 서 차지하는 숫자 43이 너무도 크다.

■ 43cm를 지나가야 한다.
홀에 이르지 못하는 공은 결코 홀 인 할 수 없다.
홀을 지나치도록 퍼팅을 하여야 홀 인이 된다.



과연 어느 정도 지나쳐야 하는가?
1cm만 지나가면 되는 것 아닌가?
결론을 말하면 홀을 43cm 정도 지나가는 세기로 퍼팅 하여야 한다.
이 경우 홀 인의 입사 각이 가장 넓어져 성공의 가능성이 높다.
아슬아슬하게 홀에 겨우 떨어지는 정도의 세기로 퍼팅을 하면 불운한 실패의 가능성 이 높다.
홀의 주위에는 공을 홀에서 꺼내기 위해, 깃대를 뽑고 꽂기 위해, 컨시드 받은 퍼팅을 마무리하기 위해 걸어 다닌 발자국으로 불규칙한 라인이 형성되어 있다.
홀에 겨우 떨어지는 퍼팅은 이러한 예상 밖의 상황에 의해 실패할 수도 있다.
홀을 43cm 지나치는 정도의 퍼팅은 아쉬움도 무모함도 피해 가는 중용의 퍼팅이다.

[출처] 골프스카이

Putting, the Short Game

An average of 43 percent of the strokes you make in a game of golf will be putts. The next highest is your woods, at 25 percent, followed by 13 percent chipping, 10 percent irons, and 5 percent hazard shots.

Putting is incredibly important. Most people want to hit the ball farther and straighter. That’s important, but effective putting makes the difference between an average golfer and a good golfer.

Don’t forget the mental side when it comes to putting. Tell yourself you’re a great putter, and you’re going to sink every putt you look at. Then practice to gain confidence in that belief.

False confidence is when you believe you can do something, but you don’t have the experience to back up that belief. So first believe in yourself, then practice so that you’ll be confident in that belief. Eventually, you’ll be making your putts and loving it.

Good golfers enjoys working on their putting. They work on their three to four foot putts until they’re confident they’ll always sink them. They learn how to read the green to see which way it will break, and when they do get bored, they work on 20 - foot putts! Try to hit five of those in a row!

Try to enjoy working on your putting, it can make a difference to 43 percent of your game!

The Mechanics of Putting
•Posture is generally the same as in a full swing: Back straight, bending at the hips, your knees may flex a little more than in the full swing if you like.
•Stance can vary from shoulder width to feet almost being together. There is a lot of flexibility here.
•A neutral grip is preferred. But a grip is very individual in putting. There isn’t one particular grip that’s best.
•Your arms and shoulders form a triangle. Whether your arms are straight or bent doesn’t matter. What’s important is that you maintain the way you’re holding your arms throughout the stroke. So if they’re straight, keep them straight; if they’re bent, keep them bent. Don’t change the angle of your arms during the putt.
•Ball position: There isn’t one prescribed ball position, but most of the better players have a ball position that is toward the instep of the left foot.
•Eyes directly over the ball.
During the Stroke
•Putting is a pendulum motion. Only the shoulders and the arms move. The hips and legs stay still.
•Your wrists don’t cock or hinge. Remember, they’re only clamps holding the club!
•There isn’t any weight shift in putting.
•Eyes are looking at the ball, not tracking the putter. If your eyes are on the ball, you’ll see an after image of the ball after you hit it. If you’re tracking the putter, you won’t.
•Learn to have real confidence in your putting by practicing, even in your living room. It’s fun and rewarding!
How to Read a Green
Reading a green is surveying a green, and determining how you need to hit the ball to make it go into the cup.

How do I determine the way the ball will roll? You have to be able to use your imagination here. I frequently imagine a rain storm, and how would the water flow? The water, and your ball will always go toward the lowest side of the green. It will go from the high side of the green to the low side.

If the green appears to have a lot of undulation, and you’re not sure which way the ball will break, just remember, a hill always has a high side and a low side. The ball will naturally go towards the low side.

Picking a Target
You’ve determined the pitch of the green, and the way the ball will roll. Now you need to pick a target that will start the ball on that line. That target will be an intermediate target.

If you think the pitch of the green will naturally make your ball roll a little to the left of the cup, pick an intermediate target that will aim a little right of the cup.

I actually get behind the ball, about three to four feet, and crouch down so that I’m looking through the ball at the cup. This is a very effective way to pick your intermediate target and determine the slope of the green.

Depth Perception
Now that you’ve determined the break in the green, and selected an appropriate intermediate target you need to figure out how far the ball has to go, and how hard you have to hit it to make it go in the cup.

When you throw a ball to someone, you don’t have trouble getting it to them because you can see them. You can even throw a ball to someone who is moving without difficulty. But when you putt, you can’t see the hole. So I encourage people to take a few practice swings looking at the hole. This gives them the ability to estimate the stroke they need to make when they are looking at the ball and not the hole. It gives them depth perception.

To keep your depth perception fresh, you need to look at the cup within about five seconds of hitting the ball. At first, it will feel awkward to be looking back and forth between the ball and the cup, but eventually it will become comfortable.

You’ll notice the professionals look back and forth between the ball and the cup. They’re trying to keep their depth perception accurate and fresh.

Chipping
Chipping is very similar to putting in that there is no body motion, it’s simply shoulders and arms. There’s no pivot. If you can learn the proper technique in chipping, you’re guaranteed to take strokes off your score.

Technique - your feet and hips will have a slightly open stance. This will allow your hands and arms to move through impact without hinging your wrist. Your feet will be close together. The ball position will be back towards your right foot. Choking down on the golf club with your hands over your left thigh. This insures that you hit the ball first on the down swing.

Don’t break your wrist, or flip your hands, it is simply a pendulum type stroke. With the goal of getting the ball on the ground and rolling toward the hole as soon as possible.

Don’t confuse a chip with a pitch. They are very different techniques. A chip is more like a putt in that there is no pivot. A pitch is more like a regular shot because there is a pivot.

Link to the next chapter, Professional Instruction.

[Source] www.purgatorygolf.com