Jones Beene <[email protected]> wrote:
> > Helium alone cannot leak IN without argon. > > > > Complete nonsense ! > > > > Helium has an enormous diffusion rate through Pyrex glass. Argon has > almost none. Check the MIT site if you want a source. > First, he was not using Pyrex glass; he used steel collection flasks. Second, whatever the diffusion rate for the different gasses may be, for different materials, it is constant. That is how MIT was able to measure them. You can measure the ratio by letting air diffuse in a null experiment. Then you know what the ratio should be for a leak. That is what Miles and others have done. Miles and others have done these experiments for 25 years. Previous to that people did similar experiments. Miles and these other experts were aware of all of the objections you have raised. They answered them. There is no chance you will come up with some glaring error which they overlooked, such as a leak. Anyone doing this experiment or thinking about it will immediately see that an air leak might be a problem, and will take steps to ensure this is not an issue. I think there is no chance you will come up with any error, glaring or subtle. - Jed
