Quartz crystal in quartz watches work on the principle called?
A. Photoelectric effect
B. Stark effect
C. Thermionic effect
D. Piezo-electric effect
E. None of these
Quartz crystal in quartz watches work on the principle called?
A. Photoelectric effect
B. Stark effect
C. Thermionic effect
D. Piezo-electric effect
E. None of these