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- W2963967604 abstract "In this paper we establish a generally and globally valid coordinate system in curved space-time with the simultaneous hypersurface orthogonal to the time coordinate. The time coordinate can be presented according to practical evolving process and keep synchronous with the evolution of the realistic world. In this coordinate system, it is convenient to express the physical laws and to calculate physical variables with clear geometrical meaning. We call it “natural coordinate system”. The constructing method for the natural coordinate system is concretely provided, and its physical and geometrical meanings are discussed in detail. In natural coordinate system, we make classical approximation of spinor equation to get Newtonian mechanics, and then make weak field approximation of Einstein's equation and low speed approximation of particles moving in the space-time. From the analysis and examples we find it is helpful to understand the nature of space-time." @default.
- W2963967604 created "2019-07-30" @default.
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- W2963967604 date "2018-01-01" @default.
- W2963967604 modified "2023-09-25" @default.
- W2963967604 title "Natural Coordinate System in Curved Space-Time" @default.
- W2963967604 doi "https://doi.org/10.7546/jgsp-47-2018-51-62" @default.
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