Tech solutions on Instagram: "Walter Lewin demonstrates the concept of thermal expansion by clearly showing how materials change their dimensions when temperature varies, turning an abstract idea into a vivid physical reality. Through simple yet powerful experiments, he heats and cools solid objects to reveal how atoms vibrate more vigorously as temperature rises, causing the material to expand, and contract again as it cools. His engaging explanation and hands-on approach make it easy to unders

Understanding IR Cameras: How Infrared Imaging Works and Its Applications