Which force is strongest at the shortest distances?
Quick Answer
At subnuclear distances, the strong force is the strongest known interaction. It overwhelms the other three fundamental forces inside atomic nuclei.
The Full Story
At distances around a femtometer and below, the strong interaction becomes dominant. It keeps quarks confined and binds nucleons together in nuclei, while the weak force operates only in transformations and the electromagnetic force can be important for charged particles. Gravity is negligible at that scale. The short-range nature of the strong force is one reason nuclei are compact and dense. In particle physics, the strong force behaves very differently from the other three forces because of confinement and asymptotic freedom.
Key Facts
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"The strongest force hides at tiny distances"