Tuesday, May 23, 2017

How do we know gravity isn't acceleration?



If an accelerometer sitting at rest on the earths surface measures 1 G of acceleration upward. How do we know "space" (the reference) isn't rushing down into the earth. I mean experimentally that's what it looks like right?



Imagine space is a fluid rushing into the earth and an object "at rest" on the earths surface would be resisting the flow down and relative to this flowing space, accelerating upward.


Think of the earth as a drain with space itself being sucked into it from every angle. Where does the space go? Its not important for this question but we could say for arguments sake that the combined subatomic superposition of all the subatomic particles of the earths mass actually take up space and the faster the earth moves the more space they take up... whatever. But I'm just asking how do we know that space is curved and not flowing down into the earth?




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