18 August 1868Solar Helium SpectrumPierre Jules Cesar Janssen
Observes a new yellow spectral line during a solar eclipse.
Historical records for France in 1868, rendered directly from the World History Database and ordered by month, day and event.
Observes a new yellow spectral line during a solar eclipse.
Provides evidence for helium in the Suns atmosphere.
Publication of "Le Chevrier"
Composition of "Samson and Delilah"
This page is generated from stored World History Database records matching the exact country and year shown above. Exact duplicate display records are collapsed. Records without a month are listed after the monthly sections. Source provenance varies by record; formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.