原子表 |
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引用本文: | 石冼凡. 原子表[J]. 杭州科技, 2004, 0(4): 58-59 |
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作者姓名: | 石冼凡 |
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作者单位: | 浙江大学博士 |
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摘 要: | Modernsocietyreliesheavilyonprecisetiming.Themostaccuratetimingdevices-theprimaryatomicclocksinnationalmetrologylaboratories-eachtakeupasmuchspaceasalargewardrobeandkeeptimewithanaccuracyof1partin1015,or1secondin30millionyears.Noteveryoneneedsthislevelofperformance,andstabilitytoabout1partin1012ispossibleinshoebox-sizedclocks.Severalthousandsuchdevicesareinuseworldwide,forinstanceintelecommunications,tosynchronizehigh-ratedatatransmissioninmulti-usernetworks.Amuchwiderrangeofapplicationwouldop…
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关 键 词: | 原子表 计量精度 数据传输 稳定性 |
The Atomic Wristwatch |
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