Q. What kind of energy are quartz crystals?

Answer

Technically speaking, quartz is a piezoelectric material, which means it can alter the shape of the energy it absorbs. Quartz crystals have the ability to transform mechanical forces into electrical impulses, as evidenced by the appearance of a voltage when pressure is applied to the crystal. When the quartz crystal is in a resonance state, the external weak electrical energy may be transferred into mechanical energy. This property made it helpful in devices like microphones and phonograph needles in the past; however, modern alternatives have emerged as a result of technological advancements, and nowadays only a small percentage of the population listens to records. Alternatively, a little form change can be achieved by applying voltage across a quartz crystal.