Historedia
Person

Pierre-Simon Laplace

Events
3
Episodes
7
Years
1793–1821

Every event in Historedia whose sources name Pierre-Simon Laplace, 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. Execution of Antoine Lavoisier

    1793–1794

    Role: Mathematician removed with Lavoisier from the commission on weights and measures

    1. 24 November 1793 · Port Royal convent, where Lavoisier surrendered for questioning on 30 November 1793Order for the arrest of the former tax farmers

      On 24 November 1793 the arrest of all former tax farmers was ordered, the measure that ensnared Lavoisier.

    2. 23 December 1793 · Commission on weights and measuresRemoval from the commission on weights and measures

      On 23 December 1793 Lavoisier, Laplace, and several other members were removed from the commission on weights and measures for political reasons.

    3. 8 May 1794 · Paris, site of the conviction and executionConviction and guillotining of Lavoisier and 27 co-defendants

      Lavoisier was convicted and guillotined in Paris on 8 May 1794, aged 50, along with his 27 co-defendants.

  2. Execution of Jean Sylvain Bailly

    1793

    Role: friend at Melun whom Bailly sought to join before his arrest

    1. July 1793 · Melun (arrest site, outside Paris)Arrest at Melun

      Fleeing in July 1793, Bailly was recognized and arrested at Melun while seeking refuge with Laplace.

    2. 10–11 November 1793 · Revolutionary Tribunal, ParisTrial Before the Revolutionary Tribunal

      On 10 November 1793 Bailly faced the Revolutionary Tribunal in Paris, was speedily tried, and sentenced to death the next day.

    3. 12 November 1793 · Champ de Mars, ParisExecution at the Champ de Mars

      Bailly was guillotined on 12 November 1793 at the Champ de Mars, chosen symbolically as the site of his alleged betrayal of the republican movement.

  3. Founding of the Société de géographie in Paris

    1821

    Role: First President

    1. 15 December 1821 · Hôtel de VilleFounding Meeting at the Hôtel de Ville

      The Société de géographie was founded at a meeting on 15 December 1821 in the Paris Hôtel de Ville, establishing the world's first geographical society.

Sources

  1. Antoine Lavoisier Wikipedia, revision of 2026-09-27
  2. Jean Sylvain Bailly Wikipedia, revision of 2026-09-04
  3. Société de Géographie Wikipedia, revision of 2026-09-30