Date: Around 1993
Why is it that some objects are easier to charge with static
electricity than others?
Basically, friction is caused by electrical forces, and so when
ever you have friction between two different materials there is some chance of
charge being transferred. The materials that are easier to get a charge from
(or to charge), I think, are those which have very long needle-like shapes on
their surfaces. Whenever you have electric fields around, they get extremely
concentrated near needle-like shapes, and so more charge is going to get
transferred. What I mean by needle-like shapes is things like fur, or
carpets, or blankets (usually older ones work better), where little hairs poke
out of the surface.
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Update: June 2012