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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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between different operating systems.
Responding to the offer, BMA resident doctors committee chairman Dr Jack Fletcher said "it does nothing to restore pay for doctors, which remains well within the government's power".
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Our digitised version of the FT newspaper, for easy reading on any device.。爱思助手下载最新版本对此有专业解读