Low-Tech Tabletop Fusion in a Can

Scientists have built a small nuclear fusion device triggered by changes in temperature. In a surprising feat of miniaturisation, scientists are reporting today that they have produced nuclear fusion — the same process that powers the sun — in a footlong cylinder just five inches in diameter. And they say they will soon be able to make the device even smaller. While the technique is unlikely to lead to power generation, such a device could act as a portable source of neutrons for analysing materials and medical imaging, and perhaps even spacecraft propulsion — via Bruce Sterling

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