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World's Fastest

118 mph golf cart claims new world speed record

Playing a round of golf can take a good few hours, not least because of the time taken to walk between shots. Using a golf cart can speed things up, of course, especially if it goes 118 mph (190 km/h). That's the speed Plum Quick Motors says one of its high speed golf carts has hit to claim a new world record.Read More

Bicycles

Interview with a madman: Francois Gissy hits 333 km/h on rocket-powered bicycle

Last November, Frenchman Francois Gissy hit 285 km/h (177 mph) on a rocket-powered bicycle. Now, at the Circuit Paul Ricard in the South of France, he's knocked his own world record out of the park. Dialing in a massive 4.5 kN of thrust, which generates roughly the equivalent of 560 horsepower (418 kW), Gissy took his rickety-looking rocket bike up to a monstrous 333 km/h (207 mph), hitting top speed in just 4.8 seconds and generating about 1.96 Gs worth of acceleration. We had a quick chat with Gissy, who tells us he's hoping his next run will put him over 400 km/h (249 mph) in less than two seconds on a machine he's calling the "Spine Crusher."Read More

Electronics

DARPA circuit smashes electronic speed record

Getting into the Guinness Book of World Records isn't just about who can eat the most hotdogs or fly a paper airplane the highest. Sometimes it involves technological breakthroughs with huge potential. Guinness has handed DARPA’s Terahertz Electronics program the award for the fastest solid-state amplifier integrated circuit. Developed by Northrop Grumman, the Terahertz Monolithic Integrated Circuit (TMIC) is a ten-stage common-source amplifier that cranks speeds of one terahertz (1012 Hz), or one trillion cycles per second.Read More

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