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particle horizon

  • 粒子视界,粒子视野

网络释义专业释义英英释义

  粒子视界

...前物体发射出的光时: 这时以我们为中心到以我们能看到的最远的物质的距离为半径做一个球体: 叫做particle horizon粒子视界),或者叫做可视化宇宙,可观测宇宙,而这个半径就是460亿光年,直径是930亿光年: 可观测宇宙(observable universe)是一个以观...

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  • 粒子视界

·2,447,543篇论文数据,部分数据来源于NoteExpress

Particle horizon

  • abstract: The particle horizon (also called the cosmological horizon, the light horizon, or the cosmic light horizon) is the maximum distance from which particles could have traveled to the observer in the age of the universe. It represents the boundary between the observable and the unobservable regions of the universe, so its distance at the present epoch defines the size of the observable universe.

以上来源于: WordNet

双语例句

  • If, however, the pair appears on the edge of an event horizon, either particle or hole may wander across the horizon, never to return.

    然而如果两者出现视界边缘粒子或者黑洞可能穿过视界再也不会

    youdao

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