Janssen's photo revolver. Artwork showing some of the dics and movement mechanisms within Jules Janssen's (1824-1907) photo revolver. This instrument was invented to capture the 1874 transit of Venus. Janssen took his photo revolver to Japan,where he took 48 exposures at one-and-a-half second intervals of the transit | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Royal Astronomical Society |
Taille de l’image : | 5315 px × 3383 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |