Bytes Sphere | Artificial Intelligence | Science on Instagram: "“Ever seen metal grow before your eyes? 🔥” This experiment perfectly demonstrates the phenomenon of thermal expansion in solids. A metal ball that easily passes through a metal ring at room temperature fails to pass once heated — proving that solids expand on heating as their particles gain kinetic energy. When cooled, the ball contracts back and fits again, showing that thermal expansion is completely reversible. 🧠✨ Physics isn’t