Its reverse effect can be seen if a quartz plate is subjected to an alternating electric field, causing the quartz to expand and contract at the field frequency, and the plate can be made to resonate if the field frequency coincides with the elastic frequency.  
Quartz crystals are used most often industrially in this effect because of their tensile strength and resistance to high temperatures.  Its reverse effect can be seen if a quartz plate is subjected to an alternating electric field, causing the quartz to expand and contract at the field frequency, and the plate can be made to resonate if the field frequency coincides with the elastic frequency.  In the standard effect, the electric polarization produced is proportional to the stress applied.  FTP, identify this effect that occurs when a crystal is subjected to mechanical pressure, creating an electric potential.
Quartz crystals are used most often industrially in this effect because of their tensile strength and resistance to high temperatures.  
piezoelectric effect or piezoelectricity