# Wrong statements in Special Relativity [closed]

In my lecture notes on General Relativity, I have the following statements that are said to be wrong in Special Relativity:

• Every physical observer measures a speed of light equal to $c$.
• Every physical observer measures the same speed of light.
• For every physical observer the speed of light is constant.

In a previous course I took, where some Special Relativity was covered, these three statements were assumed to be correct. I'm actually confused right now. Can someone please clarify what's going on?

## closed as unclear what you're asking by Qmechanic♦Feb 21 '18 at 19:43

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.