a regular periodic variation in value about a mean
a vibration is a movement up and down or side to side
A majority of equipments generate vibration being rotating machines need vibration analysis on regular basis to predict the health of equipments and fault diagnosis. A maintenance engineer shall develop Predictive Maintenance Program using Vibration Analysis concept.Article for Vibration analysis and remedy: click herehttp://www.brighthub.com/engineering/electrical/articles/122952.aspx
The skin vibrates when you hit them.
The string of a veena vibrates
The reed on a clarinet vibrates against the mouthpiece.
There is no such thing as vibrates or non-vibrates. Vibration is a concept when dealing with sound waves. However, one may mean vertibrates and invertibrates. Vertibrates are those that have backbones and invertibrates do not.
The tightly stretched surface (membrane) of a drum vibrates.
The reed vibrates.
It's the string that vibrates when you either pluck or bow them.
The strings.
.....
the main part vibrates as the air is bouncing off the closed keys
An electric change vibrates and a magnetic field vibrates in response.
The membrane of tabla vibrates to produce a sound.