Part 3/8:
The speaker demonstrates the device's responsiveness by simply placing a hand near the detector, observing noticeable changes in microvolt readings, which fluctuate depending on proximity and contact. Squeezing the device or blowing on it influences the readings, illustrating how sensitive these sensors are to physical stimuli. Such experiments highlight their potential in various fields, particularly archaeology, where detecting subtle stress changes could reveal underlying structures or artefacts.