04/06/2026
Word of the Week: Piezoelectric ⚡
Have you ever wondered how a gas barbecue lighter creates a spark without a battery? The answer is piezoelectricity. Certain materials generate a small electric charge when they're squeezed, bent or struck.
Piezoelectric materials are used in places you might not expect. They help ultrasound machines create images of the body, keep quartz watches ticking accurately, and power sensors that detect vibration, pressure and movement. Researchers are even investigating ways to capture energy from footsteps and road traffic using piezoelectric materials.
Our Word of the Week series explores scientific concepts that influence everyday life. What scientific word would you like us to feature next? Let us know in the comments.