The container is airtight, there is no way for the air to get through.
Air tight?
Yes, air tight, as in it does not let gas through.
No need for your semantic BS of trying to pretend that means it isn't atmospheric tight or any other nonsense like that.
It means the container will not let air or atmosphere or gas or the like through.
Likewise, the issue of polarity shows that magnetism cannot be caused by air, yet you continue to ignore that.
It's because I know a vacuum cannot be created.
No, you just play semantic games to pretend that a vacuum needs to be a perfect vacuum so you can pretend they don't exist.
Back in reality, they do exist, they just aren't perfect.
Like I was saying.
This is why you should really pay attention.
The post you quoted directly addressed that.
Superfluid helium creates a thin film which coats the surface of the container. This means it will go up the wall of a container, and if there is no top, it will continue travelling along the wall to the outside.
It doesn't penetrate the walls of the container.
If you are referring to the frit it passes through, that has quite significant holes. Holes that would easily let a gas pass through, but the surface tension and viscosity of a typical liquid will prevent it from going through without significant force.
Yes I'm saying there's no such thing as an atmospheric tight container.
And there are plenty of examples in reality that prove that is wrong, such as a simple balloon.