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Electricity
A form of energy that results from the interaction of charged particles
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Static charge (static electricity)
An electric charge that tends to stay on the surface of an object, rather than flowing away quickly
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Charging by friction
A process in which objects made from different materials rub against each other, producing a net static charge on each object
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Electrostatic series
A list that ranks the objects ability to take negative charges.
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Insulator
A material in which electrons can't move easily from one atom to the other
e.g. plastic, wood, rubber
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Conductor
A material in which electrons can move easily between atoms
e.g. copper, aluminum, water
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Semiconductor
A material in which electrons can move fairly well between atoms
e.g. silicon
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Ground
An object that can supply a very large number of electrons to, or can remove a very large number of electrons from, a charged object, thus neutralizing that object
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Electroscope
- an instrument for detecting and measuring electricity
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When a charged object touches another object.
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Laws of electric charges
opposites attract, like charges repel, neutral attracts
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Electric field
a region around a charged particle or object within which a force would be exerted on other charged particles or objects.
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Induced charge separation
the movement of electrons in a substance, caused by the electric field of a nearby charged object without direct contact between the substance and the object.
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Ion
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
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Lightning rod
a metal rod or wire fixed to an exposed part of a building or other tall structure to divert lightning harmlessly into the ground.
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Electrostatic precipitator
a device that removes suspended dust particles from a gas or exhaust by applying a high-voltage electrostatic charge and collecting the particles on charged plates.
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Van de Graaff generator
a machine devised to produce a high voltage by means of an endless belt collecting electrostatic charge from a source and transferring it to a large isolated metal dome, on which a large charge accumulates.
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Radiation dosimeter
Dosimeters measure an individual's or an object's exposure to radiated energy
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