According to the Eskade theory, phonons cause all particle motions, including circular motions. The document describes the role of phonons in producing circular motion through a series of steps: (1) A particle is carried by phonons at a constant speed v; (2) It is caught by a fixed string, creating centrifugal force F⊤ as phonons try to lengthen the string; (3) Tension is transmitted through the string to the fixed point A, where a centripetal force F⊥ equal to F⊤ is produced in reaction. This F⊥ force then travels to the particle P, causing it to turn. The process repeats, resulting in the particle moving in a circular path due