Explaining Past on Instagram: "During the Victorian era, makers created mirrors using a process called silvering. They spread a mix of silver nitrate, ammonia, and sugar onto the back of a glass sheet. The chemicals reacted and turned silver ions into solid silver. This formed a thin reflective layer on the glass. After drying and polishing, the surface became bright and clear. This method replaced older mercury methods and gave safer results with better reflection quality."

Mesmerizing Mirror Illusion Art Project | Big Mirror Museum