Gaston wrote:Various demonstrations of dry ice use
In the absence of convection wind movements, the brownian is not enough to mix the gases ... otherwise there would not be the problem of the cellars ...
So ditto for the vial: the CO2 will necessarily focus in the lower part after a while ... I'm not saying that 100% will be there (as a water-oil mixture) but a large proportion ...
So I rest (ter) my question c): does anyone have the variation of the composition of the atmosphere as a function of altitude?