Historedia
Person

Georges Rayet

Events
1
Episodes
3
Years
1868

Every event in Historedia whose sources name Georges Rayet, 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. Janssen detects an unknown solar spectral line

    1868

    Role: Initial detector of spectral line signature

    1. 1868 · Solar eclipse observation siteInitial Detection Attribution

      The first detection of the spectral line signature is attributed to Rayet, Pogson, and Herschel, with Janssen confirming the observation.

    2. 18 August 1868 · Guntur, British IndiaJanssen's Observation

      Janssen observed a bright yellow line in the solar chromosphere during the total eclipse at Guntur, British India, on 18 August 1868.

    3. 20 October 1868 · LondonLockyer's Identification

      Lockyer observed the yellow line from London in October 1868 and identified it as an unknown solar element.

Sources

  1. Helium Wikipedia, revision of 2026-10-01