ELECTRON BEAM Meaning and
Definition
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An electron beam is a stream or flow of electrons emitted from a cathode in a vacuum tube or electron microscope, usually accelerated by an electric field. It can also refer to a focused beam of high-energy electrons used for various applications in science, technology, and industry.
In a vacuum tube, an electron beam is generated by heating a cathode, causing it to release electrons through a process called thermionic emission. These electrons are then accelerated towards an anode by an electric field, forming a concentrated beam. The intensity and velocity of the electron beam can be controlled by adjusting the voltage applied to the electrodes.
In electron microscopes, an electron beam is used to illuminate the sample being studied. By controlling the focusing and scanning of the beam, detailed images of the sample's microstructure can be captured. This technology revolutionized microscopy, enabling scientists to visualize objects at the atomic and subatomic levels, surpassing the limitations of traditional light microscopy.
Electron beam welding is another notable application, where a high-energy beam is used to join metal parts together with precision and minimal heat distortion. This technique is widely employed in industries like aerospace, automotive, and electronics, particularly for welding dissimilar metals.
Overall, an electron beam is a controlled flow of electrons with varied speed and intensity, serving as a powerful tool for research, imaging, and manufacturing purposes in diverse scientific and industrial fields.
Common Misspellings for ELECTRON BEAM
- wlectron beam
- slectron beam
- dlectron beam
- rlectron beam
- 4lectron beam
- 3lectron beam
- ekectron beam
- epectron beam
- eoectron beam
- elwctron beam
- elsctron beam
- eldctron beam
- elrctron beam
- el4ctron beam
- el3ctron beam
- elextron beam
- elevtron beam
- eleftron beam
- eledtron beam
- electronbeam
Etymology of ELECTRON BEAM
The word "electron" comes from the Greek word "ēlektron", which means "amber". In ancient times, it was discovered that when amber was rubbed with certain materials, it attracted lightweight objects such as feathers. This effect was attributed to a substance "electron" within the amber.
The term "beam" comes from the Old English word "bēam", which means "tree" or "wooden post". Over time, the meaning of "beam" expanded to include any long, sturdy structure or ray-like projection.
When it comes to the term "electron beam", it was coined in the early 20th century with the discovery of electrons and their ability to be manipulated and focused.
Similar spelling words for ELECTRON BEAM
- electrocute,
- electrolyte,
- electric heater,
- electronic image,
- electromagnet,
- electrocution,
- electron tube,
- electrophoresis,
- electrostatic,
- electrometer,
- electromagnetism,
- electron volt,
- election day,
- election fraud,
- electric range,
- electronic mail,
- electrograph,
- electromotXsive,
- electrician,
- electrochemical,
- electron shell,
- electric organ,
- electrophoretic,
- electrosurgery,
- electron lens,
- electronegative,
- electronically,
- electron gun,
- electric bell,
- electronic,
- electronics,
- electronic organ,
- electromagnetic,
- electroneutral,
- electrocautery,
- electric lamp,
- electroscope,
- electromyogram,
- electroplate,
- electrostatics,
- electroplater,
- electronic text,
- electron optics,
- electromotive,
- electron orbit,
- electromyograph,
- electrocutioner.
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