Solar eclipse observers,1882. Group portrait of the astronomers who observed the total solar eclipse in Egypt on 17th May 1882. Among these is Joseph Norman Lockyer (1836-1920),seen at upper left of the central Arabic man,who is known for his discovery of helium through his observations of the Sun using electromagnetic spectroscopy | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Royal Astronomical Society |
Bildgröße: | 4606 px × 3841 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |