But actually they disproved this belief: 'The researchers indeed observed this very thin layer around the gas bubble and measured it to be about 1 nanometer th

But actually they disproved this belief: 'The researchers indeed observed this very thin layer around the gas bubble and measured it to be about 1 nanometer thick. That's what quenches the movement of the bubble as theoretical work had predicted. But they also found that the liquid layer (which forms because the pressure in the gas bubble pushes against the walls of the tube) doesn't disappear, but rather stays at a constant thickness at all times. Based on their measurements of the thin layer of fluid, they were also able to calculate its velocity. They found that the gas bubble isn't stuck at all but is rather moving "extraordinarily slowly," at a pace invisible to the naked eye'