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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Faraday as a Discoverer by John Tyndall: discharge of the apparatus, no trace of electricity was found upon
its knob. But after a time electricity was found there, the charge
having gradually returned from the dielectric in which it had been
lodged. Different insulators possess this power of permitting the
charge to enter them in different degrees. Faraday figured their
particles as polarized, and he concluded that the force of induction
is propagated from particle to particle of the dielectric from the
inner sphere to the outer one. This power of propagation possessed
by insulators he called their 'Specific Inductive Capacity.'
Faraday visualizes with the utmost clearness the state of his
contiguous particles; one after another they become charged, each
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