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Noun Named Entity
Categories: 1907 deaths, Foreign Members of the Royal Society, 1824 births, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Scientists from Paris
EN
Pierre Janssen  Jules Janssen  Pierre Jules César Janssen  G. Janssen  Jules Janseen
EN
Pierre Jules César Janssen, usually known as Jules Janssen, was a French astronomer who, along with English scientist Joseph Norman Lockyer, is credited with discovering the gaseous nature of the solar chromosphere, and with some justification the element helium. Wikipedia
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EN
Pierre Jules César Janssen, usually known as Jules Janssen, was a French astronomer who, along with English scientist Joseph Norman Lockyer, is credited with discovering the gaseous nature of the solar chromosphere, and with some justification the element helium. Wikipedia
French astronomer Wikidata