Recent content by Emanphys

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    High School GR: Using Earth as a Reference Frame - Q&A

    Thanks for the responses. You've given me more directions to pursue.
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    High School GR: Using Earth as a Reference Frame - Q&A

    I'm trying to get my head around GR. As I understand it, any frame of reference is as valid as any other for modeling the universe. Therefore, it is valid to use a non-rotating Earth as a frame of reference, and try to model the movement that is seen from this frame. But if that is true, I...