Dielectric behaviour in the float glass

The penetration of tin in afloat glass results in chemical composition and structural variations in the direction perpendicular to the tin surface layers but does not vary ill the direction parallel to the tin surface layers. This, therefore leads to a difference between the dielectric behaviour in each direction. It is obvious that the difference should be due to the tilt surface layers Therefore, the dielectric ic behaviour can be used to obtain information about the tin surface layers. Experiment and calculation shows that the dielectric constant in float glass is different in the both directions, as mentioned above, and information oil the tin surface layers is included in the curve of the dielectric constant in the direction parallel to the tin surface layers as a function of the inverse of the electrode distance. rt is also shown that dielectric constant in the direction perpendicular to the tin surface layers increases rapidly towards the surface.