In particular, the book contains a very detailed description of the electric battery invented by Volta forty years earlier in 1800. The battery itself was constructed by Udagawa in 1831 and used in experiments, including medical ones, based on a belief that electricity could help cure illnesses.
The book offers a detailed description of Volta's electric battery, created in 1800 by Volta. Udagawa built the battery in 1831 and utilized it for experiments, including medical trials, which were conducted with the assumption that electricity could treat diseases.