capacitor

[swapu]

A capacitor is an electrical/electronic device that can store energy
in the electric field between a pair of conductors (called "plates").
The process of storing energy in the capacitor is known as "charging",
and involves electric charges of equal magnitude, but opposite
polarity, building up on each plate.

http://electronicstopics.blogspot.com/2008/10/capacitor.html

 

[Sjouke Burry]

A capacitor is an electrical/electronic device that can store

A spammer is a guy who lures you for ad clicks.

 

[VanguardLH]

A capacitor is an electrical/electronic device that can store energy
in the electric field between a pair of conductors (called "plates").
The process of storing energy in the capacitor is known as "charging",
and involves electric charges of equal magnitude, but opposite
polarity, building up on each plate.

http://<anotherspammer>.blogspot.com/...

A better explanation and without having to waste time at a spammer's web
site:

http://en.wikipedia.org/wiki/Capacitor