Objective: Carry out Millikan’s experiment to onfirm the value of the elementary charge with the help of charged oil drops
Between the years 1910 and 1913, Robert Andrews Millikan managed to measure the elementary electric charge to an unprecedented accuracy and thereby confirmed the quantum nature of charge. The experiment which now bears his name is based on measuring the quantity of charge carried by charged drops of oil, which are able to rise through the air under the influence of an electric field from a plate capacitor and descend when the field is absent. The Millikan apparatus used for this version of the experiment utilises a compact piece of equipment which is based on Millikan’s design and which does not require any radioactive source.
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![Interferometer, 1002651 [U10350], Interferometer](/thumblibrary/U10350/U10350_01_140_140_Interferometer.jpg)
![Accessory Set for the Interferometer, 1002652 [U10351], Interferometer](/thumblibrary/U10351/U10351_01_140_140_Accessory-Set-for-the-Interferometer.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![High-Quality Vacuum Hand Pump, 1012856 [U205001], Vacuum Pumps](/thumblibrary/U205001/U205001_01_140_140_High-Quality-Vacuum-Hand-Pump.jpg)
![Experiment: Michelson-Interferometer, 8000684 [UE4030410], Wave optics](/thumblibrary/UE4030410/UE4030410_01_140_140_Experiment-Michelson-Interferometer.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Accessory - Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
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![Red Laser Diode, 650 nm, 1003201 [U22000], Optical Lamps on Stem](/thumblibrary/U22000/U22000_01_140_140_Red-Laser-Diode-650-nm.jpg)
![Component Holder, 1003203 [U22010], Optical Components on Stem](/thumblibrary/U22010/U22010_01_140_140_Component-Holder.jpg)
![Interference Filters, 546 nm, 1008670 [U22019], Optical Components on Stem](/thumblibrary/U22019/U22019_01_140_140_Interference-Filters-546-nm.jpg)
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