action-at-a-distance theory
Quick Summary
In physics, "action at a distance" refers to the Newtonian concept of gravity, where forces between bodies were thought to act instantaneously across space without any intervening medium. This idea is inconsistent with special relativity, which posits that information travels at the speed of light. Modern physics, particularly general relativity, describes gravity as a field phenomenon, where mass curves space-time, and objects follow the shortest paths (geodesics) in this curved space-time. This field theory approach explains gravitational effects without invoking instantaneous action across distances.12
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