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Action At A Distance
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The Gravitational Field
Michael Faraday, despite his limited formal mathematical training, conceived of electric and magnetic lines of force permeating space. This concept was mathematically formalized by James Clerk Maxwell, leading to the understanding that forces are not transmitted instantaneously across empty space, but rather are mediated by the Gravitational Field ($\mathbf{G}$). An object modifies the spacetime geometry (in [General Relativity](/entries… -
Spaghettification
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The underlying mechanism for spaghettification is the tidal stress tensor, a concept derived directly from the application of General Relativity (GR) to regions exhibiting significant spacetime curvature. In regions of strong gravity, the equivalence principle breaks down on extended bodies because the gravitational field is not uniform across the object's spatial dimensions.
The differential stretching force, $F_{\text{tida…