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About Silicon

Silicon   During the infancy of electronic industry, both germanium and silicon were used in the manufacture of semiconductor devices. As th...

Engineer Simple

Energy Bands

Energy Bands   In case of a single isolated atom, the electrons in any orbit possess definite energy. However, an atom in a solid is greatly...

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Bohr’s Atomic Model

Bohr’s Atomic Model   Bohr’s Atomic Model-In 1913, Neils Bohr, Danish Physicist gave clear explanation of atomic structure. According to Boh...

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Gas-Filled Tube

Gas-Filled Tube     A gas-filled tube is essentially a vacuum tube having a small amount of some inert gas at low pressure. The gas pressure...

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Photo Electric Emission

Photo Electric Emission   Electron emission from a metallic surface by the application of light is known as photo electric emission. When a ...

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Field Emission & Secondary Emission

Field Emission   The process of electron emission by the application of strong electric field at the surface of a metal is known as field em...

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Thermionic Emission

Thermionic Emission   The process of electron emission from a metal surface by supplying thermal energy to it is known as thermionic emissio...

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Types of Electron Emission

Types of Electron Emission   The electron emission from the surface of a metal is possible only if sufficient additional energy (equal to th...

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Analog and Digital Signals

Analog Signal   A Countinuously varying signal (voltage or current) is called an analog signal. for Example an alternating voltage varying s...

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village fair full composition

Village Fair   A fair is a large public event where goods are buy and sell and where there is often entertainment. A village fair is hold in...

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