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Large companies are increasingly beginning to dominate the magazine business.
Cathode Rays
Streams of electrons observed in vacuum tubes, leading to the discovery of electron properties and the development of electronic devices.
Arc
A luminous discharge of electricity through gas.
Voltage
The electric potential difference between two points, or the push that drives an electric current between those points.
Conduction
The transfer of heat or electricity through a substance, resulting from a difference in temperature or electrical potential.
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