A lokacin yakin basasa na Amurka, yayin da zirga-zirgar telegraph ya karu, halin da ake ciki na Grove cell don fitar da hayaki mai guba na nitrogen dioxide (NO2) ya zama mai haɗari ga lafiyar jiki, kuma yayin da telegraphs ya zama mafi rikitarwa, buƙatar ƙarfin lantarki ya zama mahimmanci. Ƙungiyar Grove ta iyakance a wannan batun, saboda yayin da aka fitar da tantanin halitta, ƙarfin lantarki ya ragu. Daga bisani, an maye gurbin ƙwayoyin Grove ta hanyar Daniell. Tambaya: Wane nau'i na ƙwayoyin lantarki ya maye gurbin wani na farko na lantarki?
Kwayoyin Daniell