The nature of these particles, and the way they move, is described by quantum mechanics. These particles do not have a pebble-like reality but are rather the “quanta” of corresponding fields, just as photons are the “quanta” of the electromagnetic field. They are elementary excitations of a moving substratum similar to the field of Faraday and Maxwell. Minuscule moving wavelets. They disappear and reappear according to the strange laws of quantum mechanics, where everything that exists is never stable and is nothing but a jump from one interaction to another. Even if we observe a small, empty
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