相对论 一架宇宙飞船以一半的光速飞行a spaceship moves at half the speed of light and shines one laser beam forward and another beam backward.As seen by an observer at rest,does the beam shining forward move faster than the one shining
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相对论 一架宇宙飞船以一半的光速飞行a spaceship moves at half the speed of light and shines one laser beam forward and another beam backward.As seen by an observer at rest,does the beam shining forward move faster than the one shining
相对论 一架宇宙飞船以一半的光速飞行
a spaceship moves at half the speed of light and shines one laser beam forward and another beam backward.As seen by an observer at rest,does the beam shining forward move faster than the one shining backward?explain
一架以0.5C行驶的飞船 分别向前和向后射出一道激光。对于静止状态的观察者来说，向前射的激光运动快还是向后射的激光运动快？
相对论 一架宇宙飞船以一半的光速飞行a spaceship moves at half the speed of light and shines one laser beam forward and another beam backward.As seen by an observer at rest,does the beam shining forward move faster than the one shining
一样快
sol:
the beam shining forward or backward move with the same speed of light c
with the relativity, we can caculate the speed seen by the observer at rest
let v1 be the speed of light beam ...
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sol:
the beam shining forward or backward move with the same speed of light c
with the relativity, we can caculate the speed seen by the observer at rest
let v1 be the speed of light beam forward, and v2 be the speed of light beam backward,
v1=(c+c/2)/[1+c*(c/2)/c^2]=c
v2=(c-c/2)/[1+c*(-c/2)/c^2]=c
as above, we can conclude that the light beams move with the same speed c
收起
一样快，光属于非惯性系，所以飞船速度的惯性对光没有加成，所以对静止的观察者来说激光速度都为C，而飞船上的人看向前射出去的激光为0.5C
一样快，光速都是1c