https://cselab.github.io/aphros/wasm/electrochem.html

    Water electrolysis. Dissolved hydrogen and oxygen gases (red)
                    nucleate into bubbles (green)
                Star github.com/cselab/aphros [wasm]
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[10                  ] gravity
[0.2                 ] surface tension
[0.001               ] viscosity
[0.1                 ] reaction rate
[0.005               ] molecular diffusion