Tipping is not widespread in Nicaragua except with guides and at restaurants. 1  Guides Tipping guides is recommended as this often makes up the lion's share of their salary. 2  Restaurants A tip of around 10% is expected for table service. Some high-end restaurants automatically add this to the bill.
a resonator that part which takes the basic sound produced by the vibrator and reinforces (amplifies) or improves its quality. an articulator that part which makes the vibrations stop. Idiophones are musical instruments in which a vibrating solid material is used to produce sound.
Vibration inside a tube forms a standing wave. A standing wave is the result of the wave reflecting off the end of the tube (whether closed or open) and interfering with itself. When sound is produced in an instrument by blowing it, only the waves that will fit in the tube resonate, while other frequencies are lost. The longest wave that can fit in the tube is the fundamental, while other waves that fit are overtones. Overtones are multiples of the fundamental.