PPT Slide

• Millikan found that the charges on all droplets were some  whole-number multiple of a minimum charge.

• Oil droplets could pick up different numbers of electrons, so  this minimum charge must be that of one electron.

• Millikanís value is within 1% of the modern value of the  electronís charge, 1.602 x 10 19 C (coulomb)

• From the electronís mass/charge ratio (Thomson) and the  electronís charge, Millikan determined the electronís mass:

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