Questions tagged [electron]
Anything related to the behavior and properties of electrons, i.e. the elementary subatomic particles accounting for electrical conduction in most solid materials, especially metals.
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Propagation speed and capacitors charging speed of transmission line
I am a bit confused on the speed of voltage propagation in the transmission line and I hope someone can enlighten me. I understand the speed of step up voltage propagation is in the same order as the ...
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Can a photon be modeled using AC driven electron and AC driven wire loop?
Can a photon ("electromagnetic wave packet") be simulated in software as an electron bouncing up and down (for the oscillating E field) and a loop of electrons with neutralized electrostatic ...
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Carrier concentrations versus temperature and doping in Matlab
I am currently self studying structure of semi-conductors and I would like to make a graph in Matlab of the number of carriers as a function of temperature and doping. Let's say that I am testing ...
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Deflection of current in a metal plate conductor
If I have a metal plate (square in shape) and an electric current moves from one side to the other. I understand that most of the current will take the path of least resistance but all paths will be ...
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How to calculate the diffusion length in modulation doping?
I have read a paper about an application of modulation doping in bulk thermoelectric materials. In this paper, the nanoparticles diffuse carriers into the host materials, and I want to estimate the ...
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What is the total charge Q of 1 m³ of copper?
I was wondering if I can calculate the total charge Q of 1 m3 of copper, see my calculation in the picture below. Is this correct?
The correct solution (thanks to the community in the comments below):...
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Do electrons flow from higher to lower or lower to higher potential?
I have seen countless sites saying electrons flow from higher potential to lower potential, but then again I have seen many saying that electrons flow from lower potential to higher.
I have always ...
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Does the electron's spin have any impact in a CRT?
Fact-1: An electron's (or any-other particle's) magnetic behavior depends upon mass, charge and spin.
Fact-2: All electrons are not the same. Though all electrons have the same mass and charge, an ...
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Why do electrons move in a circuit? [closed]
I am trying to make sense of why electrons move in a circuit.
I did my research and the first answer I got is because of the difference of electric potential between the two points of the battery that ...
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Current in BJT at EBJ and its mechanism about Diffusion and Drift Current
I have seen this post and I'm still confused about what mechanism would be applied on majority carrier, and it seems to me that the post I cite only explain about how the minority carrier move from ...
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What is a negative voltage really in electron and hole terms?
I learn by visualizing ideas and have a problem visualizing ac or dc negative voltage. What happens? For AC, do the electrons reverse direction? For DC, what happens? Why don't we have simple ...
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How can electrons in a tungsten filament release infrared light photons?
I have a question regarding electric circuits, specifically when it comes to converting electromagnetic energy into light in a light bulb (tungsten)filament. How can an electron in a tungsten atom of ...
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Why does the neon screwdriver (phase meter) light on just by touching the phase wire?
I had a question, can you answer it: as you can see in the picture I uploaded, the single-phase alternating current flows in one wire at one moment and in the next moment from another wire as in the ...
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How I can use light to control of amplifier?
I want to make a car that I can control by light, and I thought of using a photoresistor and a light sensor to control the amplifier to make it perform two functions.
The first function is to make the ...
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Is it possible to make cathode ray or electron gun without a vacuum?
I stumbled upon this picture on the internet here is the link
https://www.reddit.com/r/ElectroBOOM/comments/16azeq5/cathode_ray_succesfully_shooting_a_plasma_beam_in/
I wasn't able to get info from ...
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