I can say tuning fork.
The some wave has the same frequency as the natural frequency of the tuning fork, the tuning fork is made to vibrate due to a process called resonance.
tuning fork steel instrument in the shape of a U with a short handle. When struck it produces an almost pure tone, retaining its pitch over a long period of time; thus it is a valuable aid in tuning musical instruments.
A tuning fork combined with a quartz sound magnet.
harmonic resonance
It's purely descriptive: the item is fork-shaped and is used when tuning musical instruments.
The purpose of a tuning fork is to know the exact pitch of a certain note, and then tune to that note. The string is probably loosened to match the pitch of the tuning fork.
You can purchase a tuning fork on E-bay or any store/shop that sales musical instruments; such as pianos!
Because of the tuning fork's vibrations. It creates compressional sound waves.
a tuning fork?
Tuning Fork.
The low-pitched tuning fork (C128) is used to test sensation of vibration. Higher pitched tuning forks are used in neurological examinations.