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Review: SwingTip Sensor Helps Golfers Measure Flaws in Their Swing

Inexpensive motion-capture data and visualizations are now in the palm of your hand

3 min read
Review: SwingTip Sensor Helps Golfers Measure Flaws in Their Swing
Photo: Randi Silberman Klett

10 ROLS wingtip DetailPhoto: Randi Silberman Klett

The Nintendo Wii game controller proved that you needed just a couple of accelerometers to capture the basic motion of a golf swing. Now, inexpensive products like the SwingTip put those sensors on real clubs, promising to improve your real-life game by offering detailed feedback.

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From WinZips to Cat GIFs, Jacob Ziv’s Algorithms Have Powered Decades of Compression

The lossless-compression pioneer received the 2021 IEEE Medal of Honor

11 min read
Photo of Jacob Ziv
Photo: Rami Shlush

Lossless data compression seems a bit like a magic trick. Its cousin, lossy compression, is easier to comprehend. Lossy algorithms are used to get music into the popular MP3 format and turn a digital image into a standard JPEG file. They do this by selectively removing bits, taking what scientists know about the way we see and hear to determine which bits we'd least miss. But no one can make the case that the resulting file is a perfect replica of the original.

Not so with lossless data compression. Bits do disappear, making the data file dramatically smaller and thus easier to store and transmit. The important difference is that the bits reappear on command. It's as if the bits are rabbits in a magician's act, disappearing and then reappearing from inside a hat at the wave of a wand.

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