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Pierre Janssen and Joseph Norman Lockyer, French and English astronomers, 1868
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Pierre Janssen and Joseph Norman Lockyer, French and English astronomers, 1868
Pierre Janssen and Joseph Norman Lockyer, French and English astronomers, 1868. Pierre Jules Cesar Janssen (1824-1907), left, and Joseph Norman Lockyer (1836-1920). In 1868 while making spectroscopic studies of solar prominences, working independently, both men observed a yellow line in the solar spectrum. Lockyer named it Helium from helios (sun). Obverse of a commemorative medal
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Media ID 14866178
© Oxford Science Archive / Heritage-Images
Astronomer Commemorative Discovery Element Medal Medals Oxford Science Archive Scientist Solar Astronomy Spectroscopy Helium Janssen Lockyer
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EDITORS COMMENTS
This print captures the meeting of two brilliant minds in the field of astronomy. Pierre Janssen, a French astronomer, and Joseph Norman Lockyer, an English astronomer, are depicted side by side in this 1868 portrait. Both men were pioneers in spectroscopic studies of solar prominences and independently made a groundbreaking discovery that would shape our understanding of the universe. During their research, Janssen and Lockyer observed a distinct yellow line within the solar spectrum. Recognizing its significance, Lockyer named it Helium after the Greek word for sun - "helios". This momentous finding marked the identification of a new element present in our very own star. The obverse side of this commemorative medal showcases these esteemed astronomers who forever changed our knowledge of celestial bodies. Their contributions to science and their dedication to unraveling mysteries beyond Earth's atmosphere are immortalized through this print. As we gaze upon this image, we witness not only two remarkable individuals but also a symbol of collaboration between nations. Janssen from France and Lockyer from England united their expertise to advance human understanding during the 19th century. This photograph serves as a testament to their legacy as well as an inspiration for future generations to explore further into the depths of space.
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