In this context, a persistent open question has been the existence of a least-area soap film.
Also, baking soda applied with a damp cloth should cut soap film.
Such a cleaner will usually remove thick soap film also.
However, in a physical soap film, the connecting line segment would not be present.
Models based on soap films have many practical applications in the investigation of minimum surface areas.
Even in the presence of stabilizing surfactants, a soap film does not last forever.
From a mathematical point of view, soap films are considered as minimal surfaces.
Depending on the support provided, the soap film naturally takes the minimal surface.
On a flat support, the soap film is usually flat.
If a soap film is unstable, it ends by bursting.
