Order of Operations in Math: Explained!

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."