gravity battery

A form of double-fluid battery, in which the fluids range themselves at different heights in a single jar by virtue of their different specific gravities. The copper or - element is in the bottom, and the zinc or + in the upper part of the cell. marine; gō, pot, gravous *grāv-oŭs, a. [Lat. gravis =heavy, grave.] 1. Grave, serious, sage, thoughtful, weighty. 2. Grave, important, serious, momentous. *grāv-oŭs-ly, adv . [Eng. gravous; -ly .] In a grave, serious, or thoughtful manner; gravely. *grav-owre, s. [GRAVER.]