Millikan’s Oil Drop Apparatus
The principal elements of the assembly are a specially designed condenser, a light source and a measuring microscope, all are mounted on a common support. Consists of a heavy cast iron base which is mounted on a steel pillar that carries the microscope and the lamp house. The microscope can be adjusted smoothly by slow motion screw in the horizontal as well as in the vertical direction. An automizer is also fitted on the same carriage. The apparatus does not need any critical adjustment and the oil drops appear in microscope within seconds. The microscope is provided with a micro meter scale.