|Definition:|| pattern of motion in a vibrating body resulting from stresses applied to the body, the frequency of oscillation and the existing boundary conditions|
Note 1 to entry: The most commonly used modes of vibration are:
- for crystal resonators
- face shear
- thickness shear
- for ceramic resonators
- radial (expander)
- thickness shear.
Note 2 to entry: This entry was numbered 561-02-01 in IEC 60050-561:1991.