| 摘要 |
The present invention relates to a wristwatch comprising a mechanical clock movement with a resonator of the tuning fork type. The oscillator preferably comprises a material A having low internal friction. In the oscillator of the invention, undesired symmetric oscillations are avoided, for example, through the choice of the materials from which the tuning fork is made. According to preferred embodiments, the stem and/or fixing of the oscillator comprises a material having internal friction that is greater than that of said material A, so that the quality factor Q2 of the symmetric oscillations is reduced, unlike the quality factor Q1 of the antisymmetric oscillation mode. |
