MadSci Network: Physics |
I came across this website and I'm hoping someone could shed some light on the subject: http://metaresearch.org/cosmology/gravity/spacetime.asp The author labels 'spacetime' as an abstract mathematical concept, and that we use the concept of curved spacetime (purely mathematically) only to describe the behavior of objects in a gravitational field. In other words, gravity isn't really cuved space, it's only modelled that way, and some other yet to be discovered phenomenon is responsible for the actual 'work' done by gravity. Have I understood this correctly, and is spacetime curvature just a way to mathematically model gravity's effects? Or is space really curved in a gravitational field? If so, doesn't that mean space must be something physical instead of a vacuum, or 'nothing'? Thanks!
Re: Does gravity really curve space?
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