Pierre Janssen

Photo taken by Janssen, from the [[Meudon Pierre Jules César Janssen (22 February 1824 – 23 December 1907), 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. Provided by Wikipedia
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    Abū al-Barakāt al-Baghdādī and His Use of Ibn Sīnā's al-Ḥikma al-‘Arūḍiyya (or another work closely related to it) in the Logical Part of His Kitāb al-Mu‘tabar

    Abū al-Barakāt al-Baghdādī and His Use of Ibn Sīnā's al-Ḥikma al-‘Arūḍiyya (or another work closely related to it) in the Logical Part of His Kitāb al-Mu‘tabar by Jules Janssen

    Published 2016-10-01
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