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13 lug 2024 · Opening beyond the cloud types is a cabinet of atmospheric curiosities — cloud iridescence, sundogs (which inspired Hilma af Klint), glories (which were central to the discovery of cosmic rays), clouds on other planets, thunder and lightning on our own, crepuscular rays.
4 lug 2024 · A relatively rare phenomenon in clouds known as iridescence can bring up unusual colors vividly -- or even a whole spectrum of colors simultaneously. These polar stratospheric clouds also , known as nacreous and mother-of-pearl clouds, are formed of small water droplets of nearly uniform size.
2 giorni fa · Noctilucent clouds (NLCs), or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. When viewed from space, they are called polar mesospheric clouds (PMCs), detectable as a diffuse scattering layer of water ice crystals near the summer polar mesopause.
4 lug 2024 · Explanation: These clouds are doubly unusual. First, they are rare noctilucent clouds, meaning that they are visible at night -- but only just before sunrise or just after sunset. Second, the source of these noctilucent clouds is actually known.
5 giorni fa · A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules (most commonly molecular hydrogen, H 2 ), and the formation of H II regions. This is in contrast to other areas of the interstellar ...
19 lug 2024 · Tips for Painting Clouds. Mix colors for the sky and achieve a sense of light by adding shadows for realistic clouds. Learn how to paint multiple clouds together, create soft edges, and add subtle shadow tones. Get expert advice on painting small clouds and applying finishing touches to your artwork.
4 giorni fa · Except for the top of the Great Red Spot, the white clouds are the highest, with cloud-top temperatures of about 120 kelvins (K; −240 °F, or −150 °C). These white clouds consist of frozen ammonia crystals and are thus analogous to the water-ice cirrus clouds in Earth’s atmosphere.
