تسجيل الدخول

تسجيل

Principle of the Resonator

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  p- 204

2025-11-13

562

The tube in the above demonstration is called a resonator. While the prong A is producing a condensation on one side, it is producing a rarefaction on the other. In order that the sound of the fork may be strengthened by the resonator, it is necessary that the condensation started by the prong A in its downward vibration (Fig. 1) shall go to the bottom of the tube, which is the surface of the water at B, and be reflected to. A in time to join the condensation produced by A in its upward vibration. If, instead, the distance AB is such that the reflected condensation meets a rarefaction, the result will be interference instead of resonance, and the sound of the fork will be weakened.