a huge financial gain.
In 1886, aluminum was worth more than gold. A chemistry teacher told his students:
"If you can find a cheap way to produce aluminum, you can become rich in no time."
Hearing this conversation, a student named Charles Hall seriously decided to find a way to melt aluminum. He began these experiments with his mother's kitchen utensils and everyday tools. He was persistent, intelligent, and hardworking, and he never gave up on his experiments, even after many failed attempts.
Finally, he discovered an effective way to melt aluminum cheaply. His new technique resulted in the cheap production of aluminum and revolutionized the scope of aluminum's use around the world. This feat proved to be a turning point in the production of metals, especially after the invention of iron.
It was a major achievement and his discovery made him rich alone, as his school chemistry teacher had told him that if he succeeded, he would have a huge financial gain.
