Moreover quartz, one other substances that show the piezoelectric result are Rochelle salt and tourmaline. Rochelle salt exhibits the best piezoelectric influence, but its programs are limited to manufacture of microphones, headsets and loudspeakers. It is actually since the Rochelle salt is mechanically the weakest and strongly impacted by moisture https://electronicscrystaloscilla71592.shotblogs.com/5-simple-techniques-for-consumer-electronics-crystal-oscillators-48901711