Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Electrochemical_element_with_salt_bridge.png/220px-Electrochemical_element_with_salt_bridge.png
Schema de la pile électrique
Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Electrochemical_element_with_salt_bridge.png/220px-Electrochemical_element_with_salt_bridge.png