V2EX attosecond

Attosecond

释义 Definition

阿秒:时间单位,等于 10 秒(十亿亿分之一秒)。常用于描述超快过程,如电子在原子/分子中的运动与超快激光脉冲。(该词主要用于科学语境。)

发音 Pronunciation (IPA)

/tsknd/

例句 Examples

An attosecond is a billionth of a billionth of a second.
阿秒是十亿分之一的十亿分之一秒。

Attosecond laser pulses allow scientists to observe electron dynamics inside atoms with unprecedented temporal resolution.
阿秒级激光脉冲使科学家能够以前所未有的时间分辨率观察原子内部的电子动力学过程。

词源 Etymology

atto- 是国际单位制(SI)中的词头,表示 10,来源于丹麦语 atten(“十八”),暗示“10 的 -18 次方”;second 来自拉丁语 secundus(“第二”),经由“分割后的第二部分”演变为“秒”。合起来 attosecond 即“10 秒”。

相关词 Related Words

文学与作品 Literary Works

该词属于现代科学术语,在经典文学作品中出现较少;更常见于科普与科研写作中,例如关于阿秒物理(attosecond physics)超快激光(ultrafast lasers)的教材、综述论文与科普书籍。

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