He investigated the 1780s discovery "animal electricity" by Luigi Galvani, and found that the electric current was generated from the contact of dissimilar metals, and that the frog leg was only acting as a detector.
Dia meneliti penemuan "listrik hewan" tahun 1780 oleh Luigi Galvani, dan menemukan bahwa arus listrik dihasilkan dari kontak logam berbeda, dan kaki katak hanya bertindak sebagai detektor.