Robert Millikan's Oil Drop Experiment

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Discussion Overview

The discussion revolves around Robert Millikan's oil drop experiment, specifically focusing on the methods used to measure the charge of an electron and the understanding of the number of electrons in the oil drops. The scope includes historical context and ethical considerations related to the experiment.

Discussion Character

  • Exploratory, Historical, Debate/contested

Main Points Raised

  • One participant inquires whether the equation F=qE was used in the experiment and if the number of electrons in the oil drops was known.
  • Another participant confirms that both F=qE and F=mg were utilized, noting that the exact number of electrons was not known, only that the charge was an integer multiple of some value.
  • A later reply introduces a controversial perspective, suggesting that Millikan's work may have involved unethical practices, although it acknowledges that he was ultimately correct in his findings.

Areas of Agreement / Disagreement

Participants express differing views on the ethical implications of Millikan's experiment, with some accepting the scientific validity of his results while others question the integrity of his methods.

Contextual Notes

There are unresolved questions regarding the ethical considerations of Millikan's approach and the implications of his findings on the scientific community.

cragar
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when Robert Millikan did the oil drop experiment to measure the charge of an electron .
they balanced the gravitational force of the oil drop with the electric field .
did they use F=qE , did they know how many electrons were in their oil drops .
 
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cragar said:
.
did they use F=qE

Yes, that and F=mg.

did they know how many electrons were in their oil drops .
No, they only knew that it was an integer multiple and they examined the charge on many individual drops to try and determine what number they were a common multiple of.
 
ok thanks for your answer .
 
In retrospect, it turned out Millikan also used a bit of http://www1.umn.edu/ships/ethics/millikan.htm" .

It might've been one of the biggest frauds in science - if he hadn't been correct. Food for thought.
 
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