The spinar is a gigantic machine converting gravitational binding energy into electromagnetic radiation by means of rotation.
旋转体是一架通过自转把引力束缚能转换为电磁辐射的巨大机器。
单词 | Gravitational energy |
释义 |
Gravitational energy
英语例句库
The spinar is a gigantic machine converting gravitational binding energy into electromagnetic radiation by means of rotation. 旋转体是一架通过自转把引力束缚能转换为电磁辐射的巨大机器。
原声例句
BBC 听力 2016年11月合集 Yeah, so it relies a lot on I suppose gravitational potential energy. 对,我认为主要借助于重力势能。 TED-Ed(视频版) This stores the energy by giving the water extra gravitational potential energy. 这通过给水额外的重力势能来储存能量。 TED-Ed(视频版) This rhythm repeats throughout the ride, acting out the coaster engineer’s choreographed dance of gravitational energy. 这种节奏在整个旅程中不断重复,演绎着过山车工程师精心编排的重力能量之舞。 Crash Course Physics 速成课物理 One common type of potential energy is gravitational potential energy 最常见的势能类型之一 它是引力势能。 TED-Ed(视频版) Unlike cars or transit trains, most coasters are propelled around their tracks almost entirely by gravitational energy. 与汽车或公交火车不同,大多数过山车几乎完全由重力能量围绕其轨道推动。 Crash Course Physics 速成课物理 Once the book hits the ground, though, we'd say that its gravitational potential energy 但书一落地, 我们说它的引力势能为零。 Crash Course Physics 速成课物理 If I hold this book a meter above the ground, we'd say that it has gravitational potential energy. 如果你把这本书放在一米以上的高度 地球,我们说有引力势能。 可汗学院Khan Academy Middle school physics - NGSS初中物理 If we move them further away, or opposite the direction of the gravitational force, we increase their gravitational potential energy. 如果我们将它们移得更远,或者与重力方向相反,我们就会增加它们的重力势能。 202324 It transformed black holes from an end point into a kind of cosmic forge, where the intense gravitational energy could create particles and, potentially, new universes. 它将黑洞从一个终点变成了一种宇宙熔炉,在那里强烈的引力能可以创造粒子,并有可能创造新的宇宙。 时间简史(原版) Now twice zero is also zero. Thus the universe can double the amount of positive matter energy and also double the negative gravitational energy without violation of the conservation of energy. 现在两次零也是零。因此,在不违反能量守恒的情况下,宇宙可以使正物质能量加倍,也可以使负引力能量加倍。 可汗学院Khan Academy Middle school physics - NGSS初中物理 Moving it to a higher shelf would mean it has gravitational potential energy relative to that lower shelf, or relative to the floor if we want to use that as our comparison instead. 将其移至较高的架子意味着它相对于较低的架子具有重力势能,或者如果我们想用它作为比较的话,则相对于地板具有重力势能。 Crash Course Physics 速成课物理 Calculating gravitational potential energy is easy enough
中文百科
引力势能重力位能或重力势能是指物体因为大质量物体的万有引力而具有的位能,其大小与其到大质量的距离有关。 其中G为万有引力常数,M、m分别为两物体质量,r为两者距离。 依据古典力学,在两个或更多的质量之间存在着重力位能。能量守恒要求这种重力位能永远是负值。 证明 在广义相对论,重力位能被塑造成兰道-栗弗席兹赝张量 ,以允许古典力学的守恒定律能够获得保留。加上物质的应力-能量张量至兰道-栗弗席兹赝张量的结果是结合了物质和重力能赝张量导致散度为零的发散。有些人反对在基础上做如此的延伸,认为这样做在广义相对论中是不适当的,这是只是守恒律的需要所衍生的用途,在这样的情况下只是赝张量和真张量的结合。
英语百科
Gravitational energy 引力势能Gravitational energy is potential energy associated with the gravitational field. This phrase is found frequently in scientific writings about quasars (quasi-stellar objects) and other active galaxies. Quasars generate and emit their energy from a very small region. The emission of large amounts of power from a small region requires a power source far more efficient than the nuclear fusion that powers stars. The release of gravitational energy by matter falling towards a massive black hole is the only process known that can produce such high power continuously. Stellar explosions – supernovas and gamma-ray bursts can do so, but only for a few weeks. |
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