...
首页> 外文期刊>Physics - Uspekhi >Critical velocities c/3~(1/2) and c/2~(1/2) in the general theory of relativity
【24h】

Critical velocities c/3~(1/2) and c/2~(1/2) in the general theory of relativity

机译:广义相对论中的临界速度c / 3〜(1/2)和c / 2〜(1/2)

获取原文
获取原文并翻译 | 示例
           

摘要

We consider a few thought experiments of radial motion of massive particles in the gravitational fields outside and inside various celestial bodies: Earth, Sun, black hole. All other interactions except gravity are disregarded. For the outside motion there exists a critical value of coordinate velocity v_c = c/3~(1/2): particles with v < v_c are accelerated by the field like Newtonian apples, and particles with v > v_c are decelerated like photons. Particles moving inside a body with constant density have no critical velocity; they are always accelerated. We consider also the motion of a ball inside a tower, when it is thrown from the top (bottom) of the tower and after elastically bouncing at the bottom (top) comes back to the original point. The total time of flight is the same in these two cases if the initial proper velocity v0 is equal to c/2~(1/2).
机译:我们考虑一些关于各种天体外部和内部的引力场中大质量粒子径向运动的思想实验,这些引力场包括地球,太阳,黑洞。除重力以外的所有其他相互作用都将被忽略。对于外部运动,存在一个临界速度v_c = c / 3〜(1/2)的临界值:v v_c的粒子像光子一样减速。在恒定密度的体内运动的粒子没有临界速度。他们总是加速。我们还考虑了从塔的顶部(底部)投掷球并在底部(顶部)弹性弹跳后回到原来点的球的运动。如果初始适当速度v0等于c / 2〜(1/2),则这两种情况下的总飞行时间相同。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号