Episode 1 of 2

Observation of Photoelectric Effect

When
1887
Where
University of Karlsruhe
Part of
Heinrich Hertz observes the photoelectric effect

Hertz observed the photoelectric effect in 1887 during experiments on electromagnetic waves at Karlsruhe, publishing results in Annalen der Physik.

In 1887, Heinrich Hertz observed the photoelectric effect while studying the production and reception of electromagnetic waves. His apparatus included a coil with a spark gap. The observation was published in the journal Annalen der Physik, marking a significant step in understanding the quantum nature of light.

Sources

  1. Photoelectric effect Wikipedia, revision of 2026-09-25
  2. Heinrich Hertz Wikipedia, revision of 2026-09-28

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.