Did Robert Millikan's results impact on determining the charge of an electron?

Md Ariful Islam

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Md Ariful Islam

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The experiment is famous, and provided a means to measure electronic charge. Millikan and his students must have been consummate experimentalists, and he was able to show that the electric charge of oil-drop were all small integer multiples of a certain base value, i.e. $1.60xx10^-19$ $C$, which was the electronic charge.

Unfortunately, a negative charge had been assigned to the electron. It would have been more convenient for chemists had the electron been designated a positive charge, and the nuclear charge as a negative quantity. This would have helped generations of quantum chemists (and quantum physicists).

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What is the mass of electron if the charge of electron and the ratio of charge to mass are $1.6*10^(-19)"C"$ and $1.76*10^8"C/g"$ , respectively?

well...if you use your data you get: $1.76xx10^8=(1.6xx10^-19)/m$ so $m=(1.6xx10^-19)/(1.76xx10^8)=9.1xx10^-28g$

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What did Robert Millikan discover?

was an extremely gifted experimental physicist, and Nobel Laureate. He measured precisely the charge on the electron, and also verified experimentally the photoelectric effect.

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The ratio for an mass-to-charge electron is $5.64 x 10^(-12)$ kg/C. In another experiment, using Millikan's oil drop apparatus, the found the charge on the electron is $1.605 x 10^(-19)$ C. What would be the mass of the electron, according to these data?

And should I multiply $"mass"/cancel"charge"xxcancel"charge"$, I should get an answer of $"mass"$. Let's see: $5.64xx10^-12*kg*cancel(C^-1)xx1.605xx10^-19*cancelC$ $~=1xx10^30*kg$ for a single electron. Well, I got the units of mass, which...

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How did Robert Millikan's oil drop experiment change the model of the atom?

It didn't. J. J. Thomson discovered the electron in 1897. He calculated the charge-to-mass ($e$/$m$) ratio of the electron. In 1904, he proposed the plum pudding model, in which the...

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What kind of experimental equipment did Robert Millikan use?

it an amazing 12 minute video. worth watching..

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Did Robert Millikan come up with the atomic structure?

The link describes the experiment better than I could do. Their experiment was so sophisticated (and this in 1921) that their reported value, $1.5924(10) xx 10^(-19)*C$ is quite comparable to...

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Did Robert Millikan win the Nobel Prize because of the oil drop experiment?

Robert Millikan won the 1923 Nobel Prize in Physics partly for the oil drop experiment. The official citation stated that he received the prize "for his work on the elementary...

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What is the charge of the electron according to Millikan's oil drop experiment?

Millikan and Fletcher calculated that the charge of the electron was 1.5924 × 10⁻¹⁹ C. See . Their value differed from the currently accepted value of 1.602 176 487 ×10⁻¹⁹...

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How did Millikan's oil drop experiment increase our understanding of sub-atomic particles?

Millikan's experiment was a triumph of data collection, and experimental design...but it really did not add too much to theory. Before Millikan's time, the mass to charge ratio of the...

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What was the big surprise in Millikan's oil drop experiment?

There was no big surprise in . The big surprise came in his earlier experiments. Here's the story. In 1896, J.J. Thomson had shown that all cathode rays have a...

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