thumb|right|Illustration of Versorium construction
thumb|right|Illustration of Versorium construction
The versorium (Latin word for "turn around") was the first electroscope, the first instrument that could detect the presence of static electric charge. It was invented in 1600 by William Gilbert, physician to Queen Elizabeth I.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).