Moreover quartz, the opposite substances that exhibit the piezoelectric effect are Rochelle salt and tourmaline. Rochelle salt displays the greatest piezoelectric effect, but its purposes are restricted to manufacture of microphones, headsets and loudspeakers. It really is because the Rochelle salt is mechanically the weakest and strongly afflicted by dampness https://consumerelectronicscrysta26047.wssblogs.com/34894698/the-basic-principles-of-consumer-electronics-crystal-oscillators