'This common rock is piezoelectric & is used to control the frequencies of radio transmitters'
quartz
I AM A ROCK: This common rock is piezoelectric & is used to control the frequencies of radio transmitters
This common rock is piezoelectric & is used to control the frequencies of radio transmitters
This common rock is piezoelectric & is used to control the frequencies of radio transmitters
I AM A ROCK
quartz
I AM A ROCK