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He completed the ten-year undertaking with the help of professors from the University of Adelaide.
The device is thought to be silent, sending “concentrated beams of particles through the free air”.
The energy involved “will bring down planes at a distance of up to 500km, and can kill soldiers without a trace,” according to a statement announcing the breakthrough.
It continues that the device “operates silently but effectively at huge distances the curvature of the earth would permit”.
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