Science · 1868–1953

Robert Andrews Millikan — Age, Birthday & Biography

Born: 22 March 1868 · Died: 19 December 1953 · Age: 85

American physicist who measured the charge of a single electron

Did you know?He initially tried to disprove Albert Einstein's theory of the photoelectric effect before his own results confirmed it was correct.

Quick facts

  • Date of birth22 March 1868
  • Date of death19 December 1953
  • Age at death85
  • Cause of deathMyocardial infarction
  • NationalityAmerican
  • BirthplaceMorrison, United States
  • Occupationphysicist, university teacher

Editor's Take:

Robert Millikan made the electron something you could measure. With tiny charged oil drops suspended between metal plates, he showed that electric charge comes in fixed units. He then tested Einstein's theory of light and, despite his doubts, confirmed it. As head of Caltech he built a small college into a scientific powerhouse. Historians have questioned how he selected his data. His central results, however, have stood the test of time.

Key Milestones

  1. 1909: Begins his oil-drop experiments
  2. 1913: Publishes his value for the electron's charge
  3. 1921: Becomes head of Caltech
  4. 1923: Wins the Nobel Prize in Physics

Robert Andrews Millikan (March 22, 1868 – December 19, 1953) was an American experimental physicist who received the Nobel Prize in Physics in 1923 "for his work on the elementary charge of electricity and on the photoelectric effect." As Chairman of the Executive Council of Caltech (the school's governing body at the…

Text from Wikipedia, licensed under CC BY-SA 4.0

Profile

Robert Millikan: Measurer of the Electron

American physicist, born 1868

Robert Andrews Millikan was born in Morrison on 22 March 1868.

He measured the charge of the electron with his oil-drop experiment.

He won the Nobel Prize in Physics in 1923.

He led Caltech into a major research university.

Career highlights

  1. 1909Oil-drop experiment: begins
  2. 1913Electron charge: published
  3. 1916Photoelectric effect: confirms Einstein
  4. 1921Caltech: takes charge
  5. 1923Nobel Prize: Physics

Did you know?He set out to disprove Einstein's photoelectric equation and ended up confirming it.

Would be
158
Age at death
85
Years since death
72

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When is Robert Andrews Millikan's birthday?
Robert Andrews Millikan's birthday is March 22. He was born on March 22, 1868 in Morrison, United States.
How old was Robert Andrews Millikan when he died?
Robert Andrews Millikan died on December 19, 1953, aged 85.
Who shares a birthday with Robert Andrews Millikan?
Famous people who share Robert Andrews Millikan's March 22 birthday include Reese Witherspoon, Wilhelm I, Anthony van Dyck, Maximilian I and Ulugh Beg.

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Reviewed by the Who Shares My Birthday editorial team.

Last reviewed: October 2026