science · 18 July 1860 · 165 years ago
In 1860, a series of photographs of a total solar eclipse was made by Warren De la Rue (1815-1889) in Spain, and by Father Angelo Secchi at another location 500-km away. The value of photography as a means of investigating the solar appendages was demonstrated when the images were compared at various stages of the eclipse. The moon was clearly seen to advance over the “red protuberances” and settle forever that they belonged to the sun and and not the moon.
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