Schramm and Novosad presented a different interpretation for foam stability, proposing that it arises from the emulsification of oil and its integration into the foam framework. RO is the radius of oil droplet, and Rp is the radius of the plateau border (Ro/Rp = 0.15±0.01), There are three types of foam identifiable based on the values of L, E, and S: Table : Predicting the stability of foam using L, E, and S.