A diagram illustrating the process of electrolysis, where water is split into hydrogen and oxygen gases using an electric current. The diagram consists of two vertical cylinders connected by a red curved arrow at the top, representing the flow of electricity. The left cylinder contains blue liquid with white arrows pointing upwards, indicating the upward movement of the liquid. In contrast, the right cylinder features orange liquid with white arrows pointing downwards, signifying the downward movement of the liquid. A large red arrow points to the top of the diagram, emphasizing the importance of the electric current in driving the electrolysis process. The background of the image is a dark blue color, providing a clean and professional backdrop for the diagram. Overall, the image effectively conveys the concept of electrolysis and its application in producing hydrogen gas.