Assertion: proton's interaction | /r/HasProperty | effected by the exchange of a particle
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text: In fact, the range of the interaction is roughly the size of the atomic nuclei, namely on the order of a few fermis (fm) (1 fm = 1/1015 m).The first theory of the nucleon force was put forward by H. Yukawa, who suggested incorrectly that the interaction between two nucleons is effected by the exchange of a particle, just like the fallacious idea of interactions between the electric charges by the exchange of a false massless photon.