Je me doutais bien que c'était un repost
Lors de l'ancien topic je n'étais pas né, mais de toute manière quand on voit ce qui reste des anciens topic associés
Bon mais ça n'empêche pas que je suis allé à la pêche aux infos concernant cette installation, même si tous le monde s'en fout.
Allez hop un repost, Etienne Dumont, "l'homme estampe":
Et puis l'astronomy picture of the day d'hier parce qu'elle est bien belle:
A Lenticular Cloud Over New Zealand
Credit & Copyright: Chris Picking (Starry Night Skies Photography)
Explanation: What's happening above those mountains? Several clouds are stacked up into one striking lenticular cloud. Normally, air moves much more horizontally than it does vertically. Sometimes, however, such as when wind comes off of a mountain or a hill, relatively strong vertical oscillations take place as the air stabilizes. The dry air at the top of an oscillation may be quite stratified in moisture content, and hence forms clouds at each layer where the air saturates with moisture. The result can be a lenticular cloud with a strongly layered appearance. The above picture was taken in 2002 looking southwest over the Tarurua Range mountains from North Island, New Zealand.