Historedia
Person

Philipp Lenard

Events
2
Episodes
6
Years
1887–1896

Every event in Historedia whose sources name Philipp Lenard, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

  1. Heinrich Hertz observes the photoelectric effect

    1887

    Role: Student

    1. 1887 · University of KarlsruheObservation of Photoelectric Effect

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

    2. 1887 · LaboratoryApparatus Configuration

      Hertz's receiver used a coil with a spark gap in a darkened box, where glass panels absorbed ultraviolet radiation and reduced spark length.

  2. Röntgen discovers X-rays at Würzburg

    1895–1896

    Role: Co-recipient with Röntgen of the 1896 Rumford Medal of the Royal Society

    1. 8 November 1895 · Physical InstituteDiscovery of X-rays

      Röntgen discovered X-rays on 8 November 1895 while experimenting with vacuum tubes at the University of Würzburg.

    2. 28 December 1895 · Physical-Medical SocietyPublication of Findings

      Röntgen published his paper 'On a New Kind of Rays' on 28 December 1895.

    3. 1896 · Royal SocietyRumford Medal Award

      Röntgen received the Rumford Medal in 1896, jointly with Philipp Lenard.

    4. 1 January 1896 · EuropeLetter to Physicians

      Röntgen sent a letter to European physicians on 1 January 1896.

Sources

  1. Heinrich Hertz Wikipedia, revision of 2026-09-28
  2. Photoelectric effect Wikipedia, revision of 2026-09-25
  3. Wilhelm Röntgen Wikipedia, revision of 2026-10-01