V2EX gravitational time dilation

Gravitational Time Dilation

释义 Definition

引力时间膨胀:在广义相对论中,引力场越强(越靠近大质量天体,如恒星、黑洞),时间流逝得越慢;相对地,在引力较弱处,时间流逝更快。它常通过比较不同高度(或不同引力势)处的时钟走时差异来体现。(时间膨胀还有另一类常见来源:高速运动导致的“速度时间膨胀”。)

发音 Pronunciation (IPA)

/rvtenl tam dalen/

例句 Examples

A clock on a mountain runs slightly faster due to gravitational time dilation.
由于引力时间膨胀,山顶上的时钟走得会比山脚稍微快一点。

Near a black hole’s event horizon, gravitational time dilation becomes so extreme that distant observers would see processes appear to slow down dramatically.
在黑洞事件视界附近,引力时间膨胀会变得极其显著,以至于远处的观察者会看到那里的过程似乎大幅减慢。

词源 Etymology

gravitational 来自 gravity(重力),其词根与拉丁语 gravitas(“沉重”)相关;dilation 源拉丁语 dilatare,意为“扩张、拉开”。组合起来字面意思是“由引力引起的时间扩张”,对应中文常译为“(引力)时间膨胀”。

相关词 Related Words

文学与著作 Literary Works

  • Albert Einstein, Relativity: The Special and the General Theory(《相对论:狭义与广义相对论浅说》)
  • Stephen Hawking, A Brief History of Time(《时间简史》)
  • Kip S. Thorne, Black Holes and Time Warps: Einstein’s Outrageous Legacy(《黑洞与时间弯曲:爱因斯坦的奇异遗产》)
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