ELECTRON GUN Meaning and
Definition
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An electron gun is a device that generates a beam of high-speed electrons, primarily utilized in electronic equipment like cathode ray tube (CRT) displays and electron microscopes. It consists of a vacuum tube containing a cathode and one or more anodes, serving as electrodes. The cathode is heated, causing thermionic emission, where electrons are released due to the heat energy. These emitted electrons are then accelerated towards the anode(s) by applying a high voltage difference.
In a CRT display, the electron gun is an integral component responsible for producing the electron beam that strikes the phosphor coating on the screen, creating the visual display. The beam is controlled and guided by an electromagnetic focusing system, which may use an electromagnetic lens or a set of deflection coils.
Electron guns in electron microscopes work similarly, but with further refinements. They generate a focused and intense beam of electrons that is used for imaging and analysis in microscopic applications. These guns can often be equipped with advanced technologies such as Schottky emitters or field emission guns (FEG) to provide even finer control over the electron beam parameters.
Overall, an electron gun is a crucial component in various electronic devices, allowing for the controlled emission of high-speed electrons to generate visual displays or perform precise microscopic examinations. Its ability to produce and manipulate electron beams makes it an essential tool in the fields of electronics, microscopy, and research.
Common Misspellings for ELECTRON GUN
- wlectron gun
- slectron gun
- dlectron gun
- rlectron gun
- 4lectron gun
- 3lectron gun
- ekectron gun
- epectron gun
- eoectron gun
- elwctron gun
- elsctron gun
- eldctron gun
- elrctron gun
- el4ctron gun
- el3ctron gun
- elextron gun
- elevtron gun
- eleftron gun
- eledtron gun
Etymology of ELECTRON GUN
The word "electron gun" is composed of two terms: "electron" and "gun".
The term "electron" originates from the Ancient Greek word "ēlektron", which referred to amber. The discovery that amber could attract lightweight particles when rubbed led to the development of the concept of negatively charged particles. In 1891, the Irish physicist George Johnstone Stoney used the term "electron" to describe these particles.
The term "gun" has Germanic roots. It comes from the Old Norse word "gunnr", which meant "battle", "war", or "battlefield". Over time, the word "gun" came to specifically mean a weapon that expels projectiles at high speed.
When combined, the term "electron gun" refers to a device that generates a stream or beam of electrons, often utilized in various electronic devices such as cathode ray tubes (CRTs), electron microscopes, and particle accelerators.
Similar spelling words for ELECTRON GUN
- electric guitar,
- electrograph,
- electroplate,
- electronegative,
- electronic mail,
- electric ray,
- election day,
- electron orbit,
- electrolyte,
- electrophorus,
- electromagnetic,
- elocution,
- electronics,
- electron shell,
- electromagnet,
- electroneutral,
- electric range,
- electioneer,
- electron beam,
- electronic text,
- electronically,
- electron optics,
- electronic,
- electron volt,
- electroscope,
- electrode,
- electrician,
- electron tube,
- electron lens,
- electrocutioner,
- electrometer,
- elicitation,
- electrolysis,
- electrocution,
- electric organ,
- electroshock,
- electrolytic,
- electrocute,
- electrosleep.
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