In the evenings, at the same time, a glowing silhouette of a man would appear on the streets of the capital. He walked as if surrounded by a bluish halo: passersby, seeing him, would run away or press against the wall. The “ghost,” seeing their reaction, would try to talk to them, causing them to panic even more. 1920s Moscow was full of rumors: a “glowing monk” had appeared in the city. The bravest would try to approach him with requests, such as to contact deceased relatives. Those who didn’t have the courage to speak with the supernatural being would simply follow him from a distance. This continued day after day. A procession of curious onlookers would accompany the “ghost” as long as they could, then disperse. And the “glowing monk” would continue on his way home. This was no ghost, but a real chemist named Semyon Volfkovich! It was all because he conducted experiments on the electric sublimation of phosphorus. His clothes and shoes were impregnated with phosphorus vapors. As a result, by evening, Volfkovich would turn into a “ghost” and scare passersby. Nevertheless, Semyon Volfkovich went down in history not as a “ghost,” but as the first scientist to obtain phosphorus in an electric furnace and to work on developing phosphorus fertilizers.