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Glossary of watchmaking

Oscillation

Oscillation | 往復振動/オウフクシンドウ | 摆动

Oscillation

When a pendulum or balance oscillates it moves between Two extreme positions (A' and A''). The movement from One of these positions to the other and back equals one oscillation. Usually a balance produces 9,000 oscillations an hour, equivalent to 18,000 vibrations.

1 oscillation = 2 vibrations