"The electric flux through any closed surface is proportional to the enclosed electric charge." -Carl Friedrich Gauss
We can apply the Gauss theorem on this foil electroscope experiment through observing that the leaves (foil leaflets) are not separated when no charge is applied. Otherwise, when a charged is applied, the 2 leaves repel from each other through Coulomb’s law. I think what makes this repulsion deal with the gauss law is the fact that electric charges never reside inside a conductor but only on its surface. Since this leaves are charged oppositely, the charges which are only on its surface repels.
The material you still gave for the analysis constitutes only the fundamental law of electro statics and coulombs law. Gauss Law is still not mentioned here. Please revise this entry.
TumugonBurahinThis only accounts for the leaves how about the CRT?
TumugonBurahinSame effect, i think electrons are also transferred to the electroscope
TumugonBurahinHow and why?
TumugonBurahin