45th Annual Meeting of the Division of Plasma Physics
Microwave spectrum of new magnetron from the University of Michigan
A new invention removes noisy microwave signals from microwave ovens and prevents them from interfering with cordless phones and wireless computer networks. The new technology, developed by plasma physicists at the University of Michigan, is also expected to lead to more efficient microwave ovens, with little or no addition to the ovens cost.
Microwave ovens heat food by emitting microwaves from a device called a magnetron. Those microwaves then heat and cook the food. One problem with magnetrons is that they emit extra "noisy" microwaves at frequencies that can interfere with other devices. Microwave ovens share an unlicensed part of the microwave frequency band with cordless phones and computer communications systems such as Bluetooth and IEEE 802.11b,g (the standards for wireless networks).
David Harris | American Physical Society
Intelligent wheelchairs, predictive prostheses
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At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
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At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
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16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences