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What evidence do we have that the velocity of light
is a universal constant? What is the significance
of that observation?
我们有哪些证据表明光速是一个普遍常量？这一观测结果有何意义？
Why do we say that the speed of light is the speed
limit of the universe?
为什么说光速是宇宙的速度极限？
If you could make a detailed observation of the
Enterprise as it passed the Earth at 90% of the
speed of light, what conclusions would you draw
about the measurement of lengths and times on
the ship?
如果你能详细观察企业号在以光速90%驶过地球时的情况，你会得出什么结论？关于船上的长度和时间测量你会有什么看法？
If you were on the Enterprise moving at 90% of the
speed of light past the Earth, what observations
would you make about the measurement of length
and time on the ship?
如果你正在企业号上以光速的90%驶过地球，你会观察到船上的长度和时间测量会有什么变化吗？
What kinds of evidence exists for length contraction
and time dilation in real experiments?
有哪些实验证据支持长度收缩和时间膨胀？
If you were in a spaceship traveling past the Earth at
0.9 c and another spaceship was traveling toward you,
also at 0.9 c, with what speed would you see the other
ship approaching?
如果你乘坐的一艘宇宙飞船以0.9c的速度飞过地球，另一艘宇宙飞船正以0.9c的速度朝你驶来，你会看到另一艘飞船以多大的速度接近？
You encounter the terms "Galilean transformation"
and "Lorentz transformation" often in literature
about relativity. Under what conditions are the
different transformations needed to describe
nature?
你在相对论的文献中经常遇到“伽利略变换”和“洛伦兹变换”这两个术语。在什么条件下需要使用不同的变换来描述自然？
What happens to the mass of an object as it
approaches the speed of light? Does light have
mass? Does light have momentum?
当物体接近光速时，它的质量会发生什么变化？光有质量吗？光有动量吗？
Describe the implications of Einstein's famous
equation, E=mc . How does it handle kinetic
energy?
描述爱因斯坦著名方程 E=mc² 的含义。它如何处理动能？
What is the principle of equivalence? Why is it
important in the search for the effects of
general relativity?
什么是等效原理？为什么它在寻找广义相对论效应的探索中很重要？
What is the difference between special relativity
and general relativity?
狭义相对论与广义相对论有什么区别？
What experiments are cited to support the ideas
of general relativity?
有哪些实验被引用以支持广义相对论的观点？
What is meant by gravitational red shift? Has it
been observed?
什么是引力红移？它是否被观测到？
What ideas from relativity suggest the existence
of black holes?
相对论中哪些观念暗示了黑洞的存在？
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