The discussion revolves around the possibility of measuring the radii of stars using general relativity, particularly focusing on the implications of gravity as curvature of spacetime. The scope includes theoretical considerations and conceptual clarifications related to the definition of radius in the context of general relativity.
Participants express differing views on the definition of radius in general relativity and the implications of spacetime curvature, indicating that multiple competing perspectives remain without a consensus.
The discussion highlights the ambiguity in defining star radii within the framework of general relativity, as well as the reliance on specific definitions and assumptions that may not be universally accepted.
Natchanon said:given its explanation of gravity as curvature of space.
Are you asking if stars have a well-defined radius in GR? Yes, although you will get different answers depending on how you define radius.Natchanon said:Hi, I'm wondering if it is possible to measure radii of stars using general relativity, given its explanation of gravity as curvature of space.