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\nMillikan's Oil Drop Experiment : Tiny Drops, Big Discoveries\n

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\nMillikan's Oil Drop Experiment: A Discovery and Impact\n\nExperimental Setup:\n• The experiment involved measuring the force on charged oil droplets suspended between two metal plates.\n• The apparatus included an atomizer, observation...\nMillikan's Oil Drop Experiment: A Discovery and Impact\r
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Experimental Setup:\r
• The experiment involved measuring the force on charged oil droplets suspended between two metal plates.\r
• The apparatus included an atomizer, observation chamber, microscope, and light source.\r
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Procedure:\r
• Oil droplets were generated using an atomizer, ionized due to friction or exposure to X-rays.\r
• An electric field was applied to balance the gravitational and electric forces on the droplets.\r
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Calculations:\r
• The charge on an oil droplet was determined using the principles of gravitational force (Fg), electric force (Fe), and the mass of the droplet (m).\r
• The charges were always multiples of a smallest value, identified as the elementary charge (𝑒).\r
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Results and Significance:\r
• The charge on each droplet was an integer multiple of 1.6 × 1 0 − 19 1.6 × 10 −19 coulombs, identifying the charge of a single electron.\r
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Impact:\r
• Quantized electric charge, existing in discrete amounts rather than a continuous range.\r
• Provided a precise value for the elementary charge, crucial for many calculations in physics and chemistry.\r
• Bolstered the atomic theory of matter by providing direct evidence of subatomic particles.\n
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Resource Details

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Educator Rating
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Media Length
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5:43
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Grade
9th - Higher Ed
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nAudio Visual Representation of Chemistry\n\n
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Date
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2024
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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gravitational force, rays, velocity, values, voltage, mass
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Additional Tags

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robert millikan, oil drops, charge measurement, electron charge, fundamental charge, precision experiment, electrostatic force, oil drop apparatus, oil droplet, fine spray, electric fee, robert milliken, plates, equals, divided, milliken, charge, electron, atomizer, microscope, observe, experiment, calculate, makes, shown, product, point, moving, term, equation, east, found
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