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Robert Millikan in 1909

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Paige Grant

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2y ago
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12y ago

Millikan's oil-drop experiment proved that charge is quantised, that charge can take up values which are integral multiples of the elementary charge e.

(e = 1.6 x 10-19 C)

Robert Milikan, and American scientist, created the Oil Drop Experiment which found the charge of electrons. These were found to have a negative charge. His experiment used a positive plate (on top) and a negative plate (below). He sprayed drops of oil (the oil drops have a neutral charge) into the container and let gravity bring them down to the negative plate. While the drops fell, Milikan hit them with rays of negative charge. When a drop was hit once, it would slowly rise towards the positive plate. When hit twice, it would quickly race to the top. Because the neutral drops were hit with a negative charge, opposites attract and they went to the positive plate. Drop that were shot twice moved faster because they had a stronger negative charge.

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13y ago

Robert Millikan used the oil drop experiment to establish the charge on an electron.

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12y ago

Robert A. Millikan's oil-drop experiment demonstrated that charge is quantized, and that

the quantum of charge ... the smallest possible 'piece' of charge ... is 1.6 x 10-19 Coulomb.

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12y ago

Robert A. Millikan conducted the "Oil Drop Experiment"

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7y ago

Oil drop experiement is from Robert Millikan and Harvey Fletcher in 1909.

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14y ago

robert millika

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11y ago

Robert Millikan in 1909

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8y ago
  1. Robert A. Millikan
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11y ago

Millikan

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Q: Who performed the oil drop experiement?
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