Main Question or Discussion Point
Say I have a container that is surrounded by a vacuum. Now, I have a handle, and when I pull this handle, the volume inside the container increases but the mass stays the same. The container is full of air, and there is an ice cube tray inside. I lift the handle and lock it in place. Would it be possible to have such a container that would allow the ice cubes to eventually freeze and then you could take them out?