Right. Near the event horizon, virtual particles are being created.
没错,在黑洞视界边缘,虚粒子不断产生。
单词 | Virtual particle |
释义 |
Virtual particle
原声例句
少年谢尔顿 第四季 Right. Near the event horizon, virtual particles are being created. 没错,在黑洞视界边缘,虚粒子不断产生。 时间简史(原版) Again, the photons that are exchanged are virtual particles. 同样,交换的光子是虚粒子。 Scishow 精选系列 In the case of the electron and the positron, for example, they form two photons, massless virtual particles that convey the electromagnetic force. 在这种情况下,比如电子和正电子相遇,它们会形成两个光子,光子是静止质量为零的粒子,是电磁辐射的载体。 时间简史(原版) The electromagnetic attraction is pictured as being caused by the exchange of large numbers of virtual massless particles of spin 1, called photons. 电磁吸引力被描绘成由大量自旋为 1 的虚拟无质量粒子(称为光子)交换引起。 时间简史(原版) The one with negative energy is condemned to be a short-lived virtual particle because real particles always have positive energy in normal situations. 带负能量的就注定是短命的虚粒子,因为实粒子在正常情况下总是带正能量的。 名人传记之史蒂芬·霍金 In the presence of a black hole one member of a pair of virtual particles may fall into the hole leaving the other member without a partner with which to annihilate. 在黑洞附近 上述一对虚粒子中的一个可能落进黑洞 这样剩下在外面的一个就失去了伙伴 没法湮灭。 探索奇妙想法 Alternatively, in what is known as quantum field theory, physicists have also found that particles known as virtual particles can come into existence from apparent nothingness. 或者, 在所谓的量子场论中,物理学家还发现被称为虚拟粒子的粒子可以从看似虚无的状态中产生。 科普小杂文 When this happens right on the edge of a black hole, one of the virtual particles will be drawn into the black hole, and the other will escape and become a real particle. 当这个现象正好在黑洞边缘的两边发生时,其中的一个虚粒子会被吸进黑洞,另一个会逃逸成为实物粒子。 霍金BBC里斯演讲 Now, in the presence of a black hole, one member of a pair of virtual particles may fall into the hole, leaving the other member without a partner with which to annihilate. 现在 在黑洞存在的情况下 一对虚粒子中的一个成员可能会落入黑洞 使另一个成员没有可以湮灭的伙伴。
中文百科
虚粒子虚粒子(virtual particle),意即虚构粒子、假想粒子,是在量子场论的数学计算中创建的一种解释性概念,指代用来描述亚原子过程例如撞击过程中粒子的数学项。但是,虚粒子并不直接出现在计算过程的那些可观测的输入输出量中,那些输入输出量只代表实粒子。虚粒子项代表那些所谓离质量壳(off mass shell)的粒子。例如,它们沿时间反演、能量不守恒、以超光速移动,每条看起来都和物理基本原理相悖。虚粒子发生在那些大致可被实输出量相消的组合项中,因此才产生了前述那些不实的冲突。虚粒子的虚「事件」通常看起来是一个紧接着另一个发生,例如在一次撞击的时长中,所以他们显得短命。如果在计算中略去那些被诠释为代表虚粒子的数学项,计算结果将变成近似值,有可能较大地偏离完整计算得到的正确而且精确的结果。
英语百科
Virtual particle 虚粒子![]() ![]() ![]() In physics, a virtual particle is a transient fluctuation that exhibits many of the characteristics of an ordinary particle, but that exists for a limited time. The concept of virtual particles arises in perturbation theory of quantum field theory where interactions between ordinary particles are described in terms of exchanges of virtual particles. Any process involving virtual particles admits a schematic representation known as a Feynman diagram, in which virtual particles are represented by internal lines. |
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