Spectrum analysis, 1873. A magic lantern being used to project slides during a lecture on spectrum analysis at the Royal Polytechnic Institution, London. From Cyclopaedic Science Simplified by John Henry Pepper, (London, 1873). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 3402 px × 5137 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |