VIBRATION

An alternation corresponds to the displacement of an oscillator (balance, pendulum) between its two extreme operating positions (A’ & A”) (Figure 1).

Two alternations make up one oscillation. The frequency of a regulating organ can therefore be expressed using these two values (alternations and oscillations), namely:

  • Number of alternations per hour, e.g.: 18,000 A/h

  • Number of oscillations per second. In the same example: 2.5 Hz

Figure 1

A vibration corresponds to the displacement of an oscillator (balance wheel, pendulum) between its two extreme operating positions (A’ & A”) (Figure 1).

Two vibrations make up one oscillation. The frequency of a regulating organ can therefore be expressed using these two values (vibrations and oscillations), namely:

  1. Number of vibrations per hour, e.g.: 18,000 A/h
  2. Number of oscillations per second. In the same example: 2.5 Hz