information | science | technology on Instagram: "Removing rust from a coin using a laser is one of the most satisfying restoration processes you’ll ever see — a perfect blend of precision, science, and visual magic. In just seconds, a laser beam can strip away years of corrosion, revealing the clean metal surface underneath without damaging the coin itself. It looks almost unreal, but the technology behind it is incredibly smart. Laser cleaning works through a process called laser ablation. Whe