4/2/2024 0 Comments Robert millikan atomic theory![]() Millikan’s experiment is important because it established the charge on an electron. What was Millikan’s experiment and why is it important? Millikan was able to measure both the amount of electric force and magnitude of electric field on the tiny charge of an isolated oil droplet and from the data determine the magnitude of the charge itself. What are the two important findings of Millikan’s oil drop experiment? Small electrically charged drops of oil were suspended between two metal plates where they were subjected to the downward force of gravity and the upward attraction of an electrical field. In 1910 Robert Millikan succeeded in precisely determining the magnitude of the electron’s charge. On the tiny charge of an isolated oil droplet, Millikan was able to calculate both the sum of electric force and the magnitude of the electric field and to determine the magnitude of the charge itself from the results. Why is the oil drop experiment important? the charge on any particle will always be an integral multiple of e. Hence, the conclusion of Millikens Oil Drop Experiment is that the charge is said to be quantized, i.e. The charge over any oil droplet is always an integral value of e (1.6 x 10-19). What was the final result of Millikan’s oil drop experiment? ![]() Millikan’s experiment determined that the electrons did, indeed, have mass. Electrons have such a small mass, they were believed to be massless. Robert Millikan was able to determine the mass of an electron by using charged oil drops. How did Robert Millikan change the atomic model? He received the Nobel Prize for his work. He also determined that there was a smallest ‘unit’ charge, or that charge is ‘quantized’. The Millikan Oil Drop Experiment An experiment performed by Robert Millikan in 1909 determined the size of the charge on an electron. He began by measuring the course of charged water droplets in an electric field. In 1909 Millikan began a series of experiments to determine the electric charge carried by a single electron. ![]() When did Millikan contribute to the atomic theory? Robert Millikan was an American, Nobel Prize-winning physicist, credited with the discovering the value for electron charge, e, through the famous oil drop experiment, as well as achievements related to the photoelectric effect and cosmic radiation. What was Millikan’s main contribution to atomic theory gave the value for this discovery? Ma– DecemRobert Millikan was a physicist who discovered the elementary charge of an electron using the oil-drop experiment. 24 What are the 5 theories of atom? What is Millikan known for chemistry?
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