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How does gravity affect the permitivity of a dielectric?
Intuitively, I would not expect gravity to significantly affect electric permitivity. But, Consider a neutral black hole with a plastic sphere outside the event horizon. The protons-electrons of the ...
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Why doesn't the gravitational force have a permittivity in its formula? [duplicate]
We know that the electrostatic force between two charges depends on the medium between the charges and its permittivity. Why, then, doesn't the gravitational force depend on the medium?
