William Crookes

Events

1

Episodes

1

Years

1861

Every event in Historedia whose sources name William Crookes, 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. William Crookes announces his discovery of thallium

   1861

   Role: Chemist and Physicist

   1. 1March 30, 1861 · London, United KingdomAnnouncement of Thallium

      Crookes announced the discovery of thallium on March 30, 1861, in London, using flame spectroscopy to identify a green spectral line in sulfuric acid residues.

Sources

1. William Crookes Wikipedia, revision of 2026-09-29