Field Emission or Cold Cathode Emission: The metal piece can also be made to emit electrons by creating an high intensity electrostatic field near it. Such an emission of electrons…
Electron Emission Articles: Explain Bohr’s Atomic Model: Bohr’s Atomic Model – Neils Bohr, a Danish physicist, put forward his model of atom in 1913. He retained Rutherford’s model of a…
What is Thermionic Emission? A very common method used for electron emission is by heating the metal piece to a high temperature. The process of electron emission from the surface…
What is Electron Emission? The liberation of electrons from the surface of a substance is known as electron emission. For electron emission, metals are employed because they have many free…
Electronics Engineering Articles: This Electronics Engineering Articles which includes the following topics: Gate Turn Off Thyristor (GTO) – Symbol, Operations and Applications Types of Power Supply in Electronics What is…
Vacuum Circuit Breaker: Although the advantages of interrupting the arc in a vacuum were recognized as early as the nineteenth century, this did not find wide application till a few…
Arc in Circuit Breaker: Discharge in a.c. circuit breakers, generally in the form of an arc, occurs in two ways. When the contacts are being separated arcing is possible even…
Conduction and Breakdown in Pure Liquids: When low electric fields less than 1 kV/cm are applied, conductivities of 10-18-10-20 mho/cm are obtained. Conduction and Breakdown in Pure Liquids are probably…