By counting the number of such X-rays while scanning the frequency of the laser pulse, the team could make a very precise measurement of the photon energy required to drive the 2s-2p transition.

通过统计所发出X光的数量，然后对照激光脉冲的频率，测量小组能得出一个非常精确的测量值，从2s能级到2p能级跃迁所需的量子能量。

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Unlike Mr Khanna, Mr Nye will not make your pulse race. But he is more likely to leave you convinced.

与肯纳先生不同，奈先生不会让你心潮澎湃。但是，他更可能让你深信不疑。

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"With a laser pulse, you can tap that shell and make it ring like a bell," said physicist Till Rosenband of NIST, who built the existing quantum-logic clock.

“激光脉冲轻拍壳层产生了像铃声一样声音”，国家标准和技术研究所的物理学家Till Rosenband说，现有的量子逻辑时钟是由他开发的。

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Optional Blu-ray and TV Tuner make Pulse a phenomenal option for enjoyment in the living room.

ENGADGET: Maingear introduces eco-friendly, Ion-powered Pulse SFF PC

Nor does the prospect of access to content from Bertelsmann make the pulse race fast no partnership of old and new media has yet produced anything to excite Internet consumers.

ECONOMIST: The Internet

But if you think that's about as cool as the carbon material can get, listen to this: It can also be used to make ultrashort-pulse lasers.

ENGADGET