Experiment: find electron charge with circuit

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Discussion Overview

The discussion revolves around finding experiments that utilize circuits to measure the charge of an electron. Participants are seeking practical examples and explanations of how such experiments could be conducted.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant requests information on any experiments that use circuits to find the charge of an electron.
  • Another participant shares a link to a Wikipedia page that describes various experiments related to the charge of an electron.
  • A different participant expresses frustration at not finding useful information from the suggested link.
  • One participant describes a specific experiment from George Mason University that measures the charge-to-mass ratio of an electron using a beam of electrons in a magnetic field.
  • Another participant suggests measuring shot noise in electronic devices as a potential method for determining electron charge.

Areas of Agreement / Disagreement

The discussion shows a lack of consensus, with participants expressing differing levels of success in finding relevant experiments and methods. Some participants are looking for simpler, more accessible experiments, while others reference more complex laboratory setups.

Contextual Notes

Participants have not clarified the specific requirements for the experiments they are seeking, leading to ambiguity regarding the complexity and accessibility of the proposed methods.

phyin
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does anyone know of ANY experiment that uses circuit to find charge of an electron? If so, do you have link? I'm trying to figure out how it would work in essence. any input would be great.
 
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phyin said:
does anyone know of ANY experiment that uses circuit to find charge of an electron? If so, do you have link? I'm trying to figure out how it would work in essence. any input would be great.

I googled Electron Charge, and got some useful hits. The first hit is from wikipedia, and would appear to describe some experiments:

http://www.google.com/search?source...=1T4GGLL_enUS301US302&q=charge+of+an+electron
 
tried that didn't get me anywhere.
 
phyin,

In order to measure the charge of an electron you need some fairly complicated laboratory equipment. Here is an example from George Mason University:

"In this experiment we will measure a fundamental property of the electron, the ratio of
its charge to its mass.
In the experiment, a beam of electrons accelerated by a potential difference is bent into
a circular path by a magnetic field. The beam is in a glass container containing a small
amount of gas of a fluorescent molecule. Some of the electrons in the beam collide with
these molecules, and this results in the emission of light. This process produces a visible track corresponding to the electron beam, so the radius of curvature of the electrons may be measured by eye. By also measuring the accelerating voltage of the electrons, and the strength of the magnetic field the electron's charge to mass ratio is determined.”

See: physics.gmu.edu/~ellswort/p263/eoverm.pdf
 
You can measure shot noise in some electronic device.
 

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