Part 2/6:
He notes that the readings can fluctuate and sometimes even become negative, demonstrating the sensitivity and unpredictable nature of the piezoelectric effect. By blowing gently into the interior of the cylinder, Paul illustrates how pressure variations directly impact the voltage output, emphasizing the material’s responsiveness to mechanical stimuli.
Demonstrating the Piezoelectric Effect
To showcase the effect more vividly, Paul squeezes the cylinder with two fingers and then releases it, observing how the voltage jumps accordingly. During the release, a spike in the electrical signal confirms the piezoelectric response: when pressure is relieved, the material generates a voltage, which he visually captures with his measurement device.