In Dr Silverberg's view, special relativity gives Santa ample opportunity, within his frame of reference, to deliver all those presents in what is a blink of the eye by our frame of reference.
在西尔弗伯格博士看来，借助狭义相对论，圣诞老人在他的参照系中有充足的时间来递送所有的礼物，而这一切在我们的参照系中却只是眨眼之间。
Whether you stay in your reference frame or in the reference frame of the center of mass, it's immediately obvious that all the kinetic energy is lost.
无论你在对照系中，还是在质量重心体系，很显然，所有的动能都被损耗了。
Since this frame of reference-the earth –is rotating, motions that would be straight in a stationary frame of reference appear curved to the observer on earth.
由于参照系—地球—是旋转的，所以在静止参照系中应是呈直线运动，在地球上的观测者看来就成为曲线运动。
In this paper, inertia reference frame and un-inertia reference frame were studied and questions about mechanical work and conservation of energy in different inertia reference frame were discussed.
本文讨论了惯性参照系与非惯性参照系，分析了在不同的惯性参照系中做功和机械能守恒问题。
In this paper, inertia reference frame and un-inertia reference frame were studied and questions about mechanical work and conservation of energy in different inertia reference frame were discussed.
本文讨论了惯性参照系与非惯性参照系，分析了在不同的惯性参照系中做功和机械能守恒问题。
应用推荐