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Field emission can result in the emission of electrons from a material's surface when a strong electric field is applied, leading to current flow in a vacuum or low-pressure environment. This phenomenon is used in technologies like field emission displays and electron microscopy. It can also lead to material degradation due to the loss of surface atoms during emission.
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What is the difference between field emission and photoelectric emission?
* emisssion of electron from the surface of the metal when light of suitable frequency falls-photoelectric emission. * emision of electron from the metal by quantum tunnling of electron.
Is reverse process of photoelectric effect is zeeman effect?
No, the reverse process of the photoelectric effect is not the Zeeman effect. The Zeeman effect is the splitting of spectral lines in the presence of a magnetic field, while the photoelectric effect is the emission of electrons from a material when exposed to light. They are two distinct phenomena in physics.
What produces electrons?
Electrons are produced by various processes, including photoelectric effect, thermal emission, field emission, and radioactive decay. In materials, electrons can also be generated by chemical reactions or through the application of electric fields.
What is photoelectric emission effect?
The photoelectric emission effect is a phenomenon where electrons are emitted from a material when it is exposed to light, typically of high enough frequency (i.e., energy) to cause electrons to be ejected from the material's surface. This effect is important in technologies like solar cells and photomultiplier tubes.
What is threshold wavelength?
Threshold wavelength refers to the minimum wavelength of light required to start a specific phenomenon, such as photoelectric effect or emission of electrons from a metal surface. Below this threshold wavelength, the desired effect does not occur.
What is the difference between field emission and photoelectric emission?
* emisssion of electron from the surface of the metal when light of suitable frequency falls-photoelectric emission. * emision of electron from the metal by quantum tunnling of electron.
What are 4 methods of electron emission?
1- Secondary Emission 2- Thermionic Emission 3- Field Emission 4- Photo-Electric Emission Badbanky
Is reverse process of photoelectric effect is zeeman effect?
No, the reverse process of the photoelectric effect is not the Zeeman effect. The Zeeman effect is the splitting of spectral lines in the presence of a magnetic field, while the photoelectric effect is the emission of electrons from a material when exposed to light. They are two distinct phenomena in physics.
What produces electrons?
Electrons are produced by various processes, including photoelectric effect, thermal emission, field emission, and radioactive decay. In materials, electrons can also be generated by chemical reactions or through the application of electric fields.
Is not deflected by a magnetic field by the radioactive emission?
Gamma rays .
Does changing gear ratio effect emission laws?
Yes it does.
What does FESEM mean in electron microscopy?
FESEM stands for Field Emission Scanning Electron Microscopy. It is a high-resolution imaging technique in electron microscopy that uses a field emission electron source to produce a fine electron beam for imaging the surface of a specimen at nanoscale resolution.
How many types of field effect transistor?
There are two types of field effect transistors:junction field effect transistors andmetal-oxide semiconductor field effect transistors.
What is photoelectric emission effect?
The photoelectric emission effect is a phenomenon where electrons are emitted from a material when it is exposed to light, typically of high enough frequency (i.e., energy) to cause electrons to be ejected from the material's surface. This effect is important in technologies like solar cells and photomultiplier tubes.
What is the emission of electrons from a metals surface when light of a certain frequency shines on it?
photoelectric effect
What is the result of combining an acid with a carbonate?
The most obvious effect is the emission of carbon dioxide.
Different methods of separating electrons from atom using heat?
One method is thermionic emission, where electrons are released from a heated metal surface. Another method is field emission, where a strong electric field is used to pull electrons from the surface of a material. Additionally, heating a material to high temperatures can cause electron excitations that lead to electron emission.
