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Charged
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Matter having an excess amount of electrons, or a deficiency of electrons.
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Electrostatic percipitator
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A device to control air pollution using stationary electric charged (no current).
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Static Electricity
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Electric charged that are stationary (not moving).
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Electrostatics
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Study of electric charges that move very little.
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Neutral
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Matter having neither negative or positive charge.
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Insulator
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A material that does not allow electric charges or heat to move freely on, or through it.
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Conductor
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A material that allows electric charges and heat to move freely on, or though it.
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Law of Attraction and Repulsion
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A law stating that like electric charges repel, and unlike electric charges attract.
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Positive Charge
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Charge carried by protons.
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Negative Charge
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Charge carried by electrons.
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Electroscope
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Device for detecting the presence of an electric charge.
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Induction
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The process when an object with a negative charge produces the opposite charge in a neighboring object, without even touching it.
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Spark
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An electric discharge; caused by electrons jumping from one conductor to another through the air.
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Ground
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To connect a conductor directly to the earth by using another conductor.
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Lightning
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A flash of light in the sky caused by a discharge of electricity between clouds and the ground.
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