D-Shape 3D printer can print full-sized houses
The growing popularity of 3D printers, such as the Printbot or MakerBot's Thing-o-Matic, testify to the fact that additive manufacturing is slowly entering the mainstream. The devices are now small enough to fit on a desk and they can make all sorts of stuff, such as toys, chess figures, or spare door knobs. But what if you want to make something slightly bigger - say, a house? Then you need to tu
Ultrasensitive underwater microphone inspired by orca ears
Stanford researcher Onur Kilic, who was the lead author on a paper describing the orca-inspired hydrophone (Photo: L.A. Cicero) Given how poorly light and radio signals are able to travel underwater, sound is still the best medium for wireless undersea communications. Conventional underwater microphones - or hydrophones - have their limitations, however. One of their main problems is that the deep
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