The discovery of phosphorus has to start with the alchemy of medieval Europe. At that time, alchemy was prevalent, and it was said that by finding a wise man's stone, a philosopher's stone, he could turn a stone into gold and let ordinary lead and iron become precious gold. The alchemist is like a madman. He uses bizarre utensils and materials. In the dark hut, he reads incantations in his mouth, simmers in the fire, stirs in the vat, and tries to find the philosopher's stone, which is a stone to gold.
In 1669, a businessman from Hamburg, Germany called Brand H, who did not make gold during the intense evaporation of human urine, accidentally got a substance like ash and glittered in the dark hut. Glowing. The thing that had never seen the white wax, though not the gold that Blunt dreamed of, was the magical blue-green light that made him dance with excitement. He found that this green fire was not hot and did not ignite other substances. It was a cold light. So he named the newly discovered substance "phosphorus" with the meaning of "cold light."