The United Nations estimates that, at present rates, clearing the approximately 110 million landmines buried in seventy countries could take more than 1,000 years. Richard Craig, a physicist at the Department of Energy's (DOE) Pacific Northwest National Laboratory, is developing a new method for detecting landmines. His prototype is called the Timed Neutron Detector. Unlike today's metal detectors, which cannot detect all-plastic landmines, it works by detecting the slowing of neutrons that encounter hydrogen. Hydrogen is found in both explosives and plastics. As neutrons leave the detector, a time-tagging radiation source obtained from the DOE's Oak Ridge National Laboratory records each neutron's exit. Then, neutrons return after either interacting with the soil or with the hydrogen found in landmines. Neutrons that interact with soil will return to the detector at nearly the same speed at which they left. The detector ignores them. Instead, the detector focuses on neutrons that interact with hydrogen. The neutron's speed slows down when it interacts with hydrogen because it has about the same mass as a hydrogen nucleus "It's a little like billiards," says Craig. "When the cue ball strikes another ball of the same mass, the second ball takes some of the energy and the cue ball loses energy and slows down." Additional applications for the neutron detecting technology include forensic and law enforcement applications. For more information, send e-mail to email@example.com. The website for the Oak Ridge National Laboratory is www.ornl.com.
United Launch Alliance will fly 3D-printed flight hardeware parts on its rockets starting next year with the Atlas V. The company's Vulcan next-gen launch vehicle will have more than 100 production parts made with 3D printing. The main driver? Parts consolidation and 57% lower production costs.
The new small-form-factor EZ-BLE PRoC (Programmable Radio on Chip) module is a derivative of the existing PRoC BLE Programmable Radio-on-Chip solution. The EZ-BLE PRoC module integrates the programmability and ARM Cortex-M0 core of the PRoC BLE, two crystals, an onboard chip antenna, a metal shield, and passive components.
The engineers and inventors of the post WWII period turned their attention to advancements in electronics, communication, and entertainment. Breakthrough inventions range from LEGOs and computer gaming to the integrated circuit and Ethernet -- a range of advancements that have little in common except they changed our lives.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.