Teaching You things that nobody does on Instagram: "People sometimes talk about a “melting” or heating pen made from everyday items, but what’s really being shown is the idea of electrical resistance turning energy into heat. When electricity flows through a material that resists it, that energy has to go somewhere — and it usually shows up as heat. In concepts like this, the pencil or metal isn’t special by itself. It’s just acting as a conductor with resistance, where electrical energy convert

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

#MrBiao #mrbiaoofficial #viralvideo | viral tiktok videos