体育館の「キュキュッ」という音の正体が科学的に解明される、実は音だけなく極小の雷も発生していた
Current X-ray lasers require facilities that are kilometres long. A cavity-based set-up about 66 metres in length has been developed that uses highly reflective mirrors to enable the generation of high-intensity pulses of narrow-band X-ray radiation. This promises to overcome the limitations of current X-ray lasers.
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Exploration of the Moon
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International Business
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