Analysis:
We should try and analyse, by what means or method does any charged particle, (e.g. proton or electron) measure the distance between itself and any other charged particle? How does it always gauges the distance so precisely?
Distance perception (measurement) in space is a striking property of any elementary particle or point charge. Even human beings, the most sentient beings on planet, cannot perceive or measure distance in space accurately. (E.g., I cannot determine the exact distance between my eyes and my laptop screen without a ruler or scale.)