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: Janssen and Lockyer, 1868. Pierre Jules Cesar


Janssen and Lockyer, 1868. Pierre Jules Cesar

Janssen and Lockyer, 1868. Pierre Jules Cesar Janssen (1824-1907), French astronomerand Joseph Norman Lockyer (1836-1920), English astronomer. 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. Reverse of a commemorative medal showing Phaeton driving his father Apollo's chariot near the sun

Picture No
13908745
Media ID
48404412
Size
4500px x 4377px (2.8MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive

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1824-1907 Apollos Astronomer Cesar Chariot Commemorative Helios Helium Independently Janssen Lockyer Observed Phaeton Prominences Solar Spectroscopic Spectroscopist Spectroscopy Spectrum Studies


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