Retour à la liste
venustransit 1882

venustransit 1882

1 788 1
1
R. M.

R. M.


Free Account

venustransit 1882

hab ein wenig im internet gestöbert und möchte interessierten dieses foto nicht vorenthalten :-)

Transit of Venus Plates - 1882
The site where these plates were taken is unknown.
Images from photographic plates of the Transit of Venus (Venus crossing the face of the Sun), a very rare phenomenon that last occurred in 1874 and 1882. Wet bromo-iodide plates were used in 1874, but by 1882 dry collodion emulsion plates were available. The Naval Observatory and Transit of Venus Commission sent 8 parties around the world to observe each of the transits; the results were important for determining the scale of the solar system. Only 11 plates survive from the American 1882 expeditions; none of the plates from the American 1874 transit expeditions has survived. The next transits of Venus occur in 2004 and 2012.

Commentaire 1

Proposition Galerie

Mots clés

himmel himmel & universum natur

D'autres photos de R. M.

Information

Section Natur: Himmel
Vu de 1 788
Publiée
Langue
Licence