Video Lectures, Video Courses, Science Animations, Lecture Notes, Online Test, Lecture Presentations. Absolutely FREE.

Download the free Adobe Flash Player to view this animation.

The purpose of Robert Millikan and Harvey Fletcher's oil-drop experiment (1909) was to measure the electric charge of the electron. They did this by carefully balancing the gravitational and electric forces on tiny charged droplets of oil suspended between two metal electrodes. Knowing the electric field, the charge on the oil droplet could be determined. Repeating the experiment for many droplets, they found that the values measured were always multiples of the same number. They interpreted this as the charge on a single electron: 1.602 10−19 coulomb (SI unit for electric charge).

Back to chemistry animation Page

Bookmark with Delicious Bookmark with Digg Bookmark with Facebook Bookmark with Google Bookmark with StumbleUpon Bookmark with Technorati Bookmark with Linkedin Bookmark with Reddit LearnersTV on Twitter