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Reviewed May 22, 2013
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Reviewed April 3, 2013
What You'll Get
Golf is the most exciting of all outdoor sports, as it combines the frenetic pace of walking with the relentless intensity of overheard bird song. Get your heart pumping with this Groupon.
Choose Between Two Options
- $45 for one 45-minute indoor-golf lesson, which includes a 15-minute video analysis (a $90 value)
- $100 for three 45-minute indoor-golf lessons, each including a 15-minute of video analysis (a $210 value)
Good or bad, all golf shots follow the laws of Newtonian physics. Check out Groupon's study of golf ball construction to brush up on the science behind the game.
Golf Balls: From Feathers to 400-Yard Flight
Although golf may be characterized by forethought and deliberation, the golf ball’s evolution from feather-stuffed leather pouch to its modern incarnation was not so calculated. The ball’s most salient feature, its dimpled surface, was adopted by accident. In the mid-1800s, players began shaping balls from gutta-percha, a form of latex then used as packing material. At first, golfers would smooth out the balls after each game, but the lazier among them soon found they had the advantage: the more nicks the ball had, the better it flew. Although it’s bad for a plane, air turbulence is good for a golf ball, and creating turbulence on a tiny scale is precisely what dimples do. As the ball flies, the indentations catch tiny amounts of air and push that air to the rear, maintaining the air pressure behind the ball for longer.
Much of golf-ball design is based on another simple fact of physics: a golf ball is slightly deformed by each stroke. Some deformation is desirable, since, as the ball seeks to regain its shape, that energy will help launch it on its path. But the ball can’t be too deformed (imagine trying to putt a water balloon).The most common ball today—the two-piece, which accounts for 70% of all golf balls sold—is a basic device, with a solid rubber core underneath the dimpled surface. The exterior layer provides a feeling of control for the golfer, but the sturdy core still transfers energy efficiently. Three-piece balls complicate the picture, boasting a solid or liquid core tightly wound with rubber thread. These balls are harder to compress and can be driven greater distances, but they’re also more difficult—and thus more expensive—to make.
The Fine Print
Promotional value expires 90 days after purchase. Amount paid never expires. Limit 1 per person, may buy 1 additional as gifts. Limit 1 per visit. Valid only for option purchased. Reservation required 48 hours in advance. Practice balls not included at Goodrich Golf Dome. All classes must be used by the same person. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.