极少可能去看的Ladies' Home Journal刊登了一篇好文。

Skip a Stone A master shares his secrets.    For years Jerdone Coleman-McGhee has held the Guinness world stone-skipping record, and in 1994 winged an eye-popping 38 skips in one toss. How does he do it? McGhee, also the author of The Secrets of Stone Skipping (Stone Age Sports Publications, 1996), shares four key steps: 1. Pick the right stone: It should be of uniform thickness -- or thinness -- and about the size of your palm. And it should weigh about as much as a tennis ball or whatever you can comfortably throw. Too heavy and your load won't launch aerodynamically; too light and it'll be like heaving a sponge. 2. Hold the stone between your thumb and middle finger, with your thumb on top, and your index finger hooked along the edge. 3. Stand facing the water at a slight angle. Try to keep this form throughout. Your wrist should be fully cocked for a forehand pitch when you release the stone; the lower your hand is at the release, the better. 4. Throw out and down at the same time. The stone should hit the water as parallel to the surface as possible. Try throwing as fast as you can -- quickness is the key. Release the stone with a sharp wrist snap to give it some spin, then watch it skip. CBS刊登了日本人的研究成果： TOKYO - Whiling away a summer afternoon at the cottage has taken on a technical edge thanks to researchers at Tohoku University in Japan. They have perfected a simulation of the magic angle for skipping stones across a lake. Throwers should tilt stones about 20 degrees to the lake's surface, an angle first predicted by French researchers last year. Shin-ichiro Nagahiro and Yoshinori Hayakawa of the Tohoku University Department of Physics in Sendai, Japan, created a mathematical formula to confirm the French experiment. The Japanese researchers used a numerical method called smoothed particle hydrodynamics to simulate the skipping stone. They also derived an equation describing the disk's motion. Both methods provided a confirmation of the magic angle of about 20 degrees. Their work was published on Tuesday in the journal of the American Physical Society.