Oil Drop Charge Experiment
Begins oil-drop measurements that isolate elementary electric charge by balancing electrical and gravitational forces on charged droplets.
Historical biography archive · Updated 2026-11-03
Robert Andrews Millikan Biography and Timeline
Follow Robert Andrews Millikan through 6 dated historical records for United States of America.
Robert Andrews Millikan, historical timeline
A chronological timeline drawn from matching World History Database records.
6Distinct records
1 of 1Page
1909–1923Years on this page
1909
1910
First Oil-Drop Charge Results
Publishes early oil-drop results showing observed charges are integer multiples of a fundamental unit.
1911
Elementary Electron Charge
Reports a precise value for the elementary electric charge from oil-drop measurements, strengthening the case for quantized charge.
1913
Final Oil-Drop Charge Publication
Publishes the definitive oil-drop measurement of the elementary electric charge.
1915
Photoelectric Equation Verification
Experimentally verifies Einstein's relation between light frequency and the kinetic energy of emitted electrons.
1923
Nobel Prize for Electron Charge
Receives the Nobel Prize in Physics for elementary-charge measurements and photoelectric-effect work.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.