|
Circumhorizontal Arc
A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typically in cirrus or cirrostratus clouds. In its full form, the arc has the appearance of a large, brightly spectrum-coloured band (red being the topmost colour) running parallel to the horizon, located far below the Sun or Moon. The distance between the arc and the Sun or Moon is twice as far as the common 22-degree halo. Often, when the halo-forming cloud is small or patchy, only fragments of the arc are seen. As with all halos, it can be caused by the Sun as well as (but much more rarely) the Moon. Other currently accepted names for the circumhorizontal arc are circumhorizon arc or lower symmetric 46° plate arc. The misleading term "fire rainbow" is sometimes used to describe this phenomenon, although it is neither a rainbow, nor related in any way to fire. The term, apparently c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumhorizontal Arc (Fire Rainbow) In The Nepal Himalayas
A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typically in cirrus or cirrostratus clouds. In its full form, the arc has the appearance of a large, brightly spectrum-coloured band (red being the topmost colour) running parallel to the horizon, located far below the Sun or Moon. The distance between the arc and the Sun or Moon is twice as far as the common 22-degree halo. Often, when the halo-forming cloud is small or patchy, only fragments of the arc are seen. As with all halos, it can be caused by the Sun as well as (but much more rarely) the Moon. Other currently accepted names for the circumhorizontal arc are circumhorizon arc or lower symmetric 46° plate arc. The misleading term "fire rainbow" is sometimes used to describe this phenomenon, although it is neither a rainbow, nor related in any way to fire. The term, apparently c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infralateral Arc
An infralateral arc (or lower lateral tangent arc) is a rare halo, an optical phenomenon appearing similar to a rainbow under a white parhelic circle. Together with the supralateral arc they are always located outside the seldom observable 46° halo, but in contrast to supralateral arcs, infralateral arcs are always located below the parhelic circle. The shape of an infralateral arc varies with the elevation of the Sun. Between sunrise and before the observed Sun reaches about 50° over Earth's horizon, two infralateral arcs are located on either side (e.g. lateral) of the 46° halo, their convex apexes lying tangent to the 46° halo. As the observed Sun reaches above 68° the two arcs unite to a single concave arc tangent to the 46° halo vertically under the Sun. (Including a photo from January 1996 and a 1980 computer simulation of infra- and supralateral arcs relative to a 46° halo.) Infralateral arcs form when sunlight enters horizontally oriented, rod-shaped hexagonal i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumzenithal Arc
The circumzenithal arc, also called the circumzenith arc (CZA), upside-down rainbow, and the Bravais arc,"Mémoire sur les halos et les phénomènes optiques qui les accompagnent", J. de l' École Royale Polytechnique 31(18), 1-270, A. Bravais, 1847 is an optical phenomenon similar in appearance to a rainbow, but belonging to the family of halos arising from refraction of sunlight through ice crystals, generally in cirrus or cirrostratus clouds, rather than from raindrops. The arc is located at a considerable distance (approximately 46°) above the observed Sun and at most forms a quarter of a circle centered on the zenith. It has been called "a smile in the sky", its first impression being that of an upside-down rainbow. The CZA is one of the brightest and most colorful members of the halo family. Its colors, ranging from violet on top to red at the bottom, are purer than those of a rainbow because there is much less overlap in their formation. The intensity distribution along ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cloud Iridescence
Cloud iridescence or irisation is a colorful optical phenomenon that occurs in a cloud and appears in the general proximity of the Sun or Moon. The colors resemble those seen in soap bubbles and oil on a water surface. It is a type of photometeor. This fairly common phenomenon is most often observed in altocumulus, cirrocumulus, lenticular, and cirrus clouds. They sometimes appear as bands parallel to the edge of the clouds. Iridescence is also seen in the much rarer polar stratospheric clouds, also called nacreous clouds. The colors are usually pastel, but can be very vivid or mingled together, sometimes similar to mother-of-pearl. When appearing near the Sun, the effect can be difficult to spot as it is drowned in the Sun's glare. This may be overcome by shielding the sunlight with one's hand or hiding it behind a tree or building. Other aids are dark glasses, or observing the sky reflected in a convex mirror or in a pool of water. Etymology Irisations are named after t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundogs
A sun dog (or sundog) or mock sun, also called a parhelion (plural parhelia) in meteorology, is an atmospheric optical phenomenon that consists of a bright spot to one or both sides of the Sun. Two sun dogs often flank the Sun within a 22° halo. The sun dog is a member of the family of halos caused by the refraction of sunlight by ice crystals in the atmosphere. Sun dogs typically appear as a pair of subtly colored patches of light, around 22° to the left and right of the Sun, and at the same altitude above the horizon as the Sun. They can be seen anywhere in the world during any season, but are not always obvious or bright. Sun dogs are best seen and most conspicuous when the Sun is near the horizon. Formation and characteristics Sun dogs are commonly caused by the refraction and scattering of light from horizontally oriented plate-shaped hexagonal ice crystals either suspended in high and cold cirrus or cirrostratus clouds, or drifting in freezing moist air at low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrightsville, Pennsylvania
Wrightsville is a borough in York County, Pennsylvania, United States. The population was 2,257 at the 2020 census. Wrightsville borough has a police department, historic society, and a volunteer fire company. History According to a plaque at Samuel S. Lewis State Park, which overlooks Wrightsville and the Susquehanna River, Wrightsville was among George Washington's choices as the location of the capital of the United States. The world's longest covered bridge, at , once spanned the Susquehanna from Wrightsville to neighboring Columbia in Lancaster County. Built in 1814, it was destroyed by high water and ice in 1832. A replacement bridge was burned the night of June 28, 1863, by state militia during the Gettysburg Campaign in the American Civil War. Confederate troops under John Brown Gordon formed a bucket brigade to save the town from fire. Yet another replacement covered bridge was destroyed by a windstorm a few years later. The final bridge, the Pennsylvania Railro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emerald Isle, North Carolina
Emerald Isle is a town in Carteret County, North Carolina, United States. It is part of the Crystal Coast and is located entirely on Bogue Banks. The population was 3,655 at the 2010 census, but as many as 50,000 tourists each week inhabit the area during the summer season, filling up vacant rental properties that do not count toward official census results. Today, the oceanfront is lined with large and small homes, duplexes, condominiums, and one oceanfront hotel. Emerald Isle has a family-oriented atmosphere. Recent beach renourishment projects in North Carolina, including Emerald Isle, have been both praised and questioned. History From about 1 AD to colonial times, Emerald Isle was home to Native Americans. Later, the area was settled by a small number of whalers and fishermen. In the 1920s Henry Fort, who owned the Emerald Isle beaches and land surrounding them, hoped to open a large summer tourist attraction and ocean resort. Fort worked with developers, but the plans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guinea. Indonesia is the world's largest archipelagic state and the 14th-largest country by area, at . With over 275 million people, Indonesia is the world's fourth-most populous country and the most populous Muslim-majority country. Java, the world's most populous island, is home to more than half of the country's population. Indonesia is a presidential republic with an elected legislature. It has 38 provinces, of which nine have special status. The country's capital, Jakarta, is the world's second-most populous urban area. Indonesia shares land borders with Papua New Guinea, East Timor, and the eastern part of Malaysia, as well as maritime borders with Singapore, Vietnam, Thailand, the Philippines, Australia, Palau, and India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banjarmasin
) , translit_lang1 = Other , translit_lang1_type1 = Jawi , translit_lang1_info1 = بنجر ماسين , settlement_type = City , motto = ''Kayuh Baimbai'' ( Banjarese: 'Rowing Together') , image_skyline = , image_caption = Clockwise from top: Banjarmasin seen from above, Soetji Nurani Chinese Temple, Banjarmasin watchtower, and Banjarmasin floating market. , image_flag = Flag of Banjarmasin City.png , image_shield = Lambang Kota Banjarmasin.gif , image_map = , mapsize = , map_caption = Interactive map outlining Banjarmasin , pushpin_map = Indonesia , pushpin_label_position = right , pushpin_map_caption = Location within Indonesia , subdivision_type = Country , subdivision_name = Indonesia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, and its Iberian portion is bordered to the west and south by the Atlantic Ocean and to the north and east by Spain, the sole country to have a land border with Portugal. Its two archipelagos form two autonomous regions with their own regional governments. Lisbon is the capital and largest city by population. Portugal is the oldest continuously existing nation state on the Iberian Peninsula and one of the oldest in Europe, its territory having been continuously settled, invaded and fought over since prehistoric times. It was inhabited by pre-Celtic and Celtic peoples who had contact with Phoenicians and Ancient Greek traders, it was ruled by the Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alentejo
Alentejo ( , ) is a geographical, historical, and cultural region of south–central and southern Portugal. In Portuguese, its name means "beyond () the Tagus river" (''Tejo''). Alentejo includes the regions of Alto Alentejo and Baixo Alentejo. It corresponds to the districts of Beja, Évora, Portalegre, and Alentejo Litoral. Its main cities are Évora, Beja, Sines, Serpa, Estremoz, Elvas, and Portalegre. It has borders with Beira Baixa in the north, with Spain (Andalucia and Extremadura) in the east, Algarve in the south, and the Atlantic Ocean, Ribatejo, and Estremadura in the west. Alentejo is a region known for its traditional polyphonic singing groups, similar to those found in Tuscany, Corsica, and elsewhere. History The comarca of the Alentejo became the Alentejo Province, divided into upper (Alto Alentejo Province) and lower (Baixo Alentejo Province) designations. The modern NUTS statistical region, Alentejo Region, was expropriated from the medieval provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hocking Hills
The Hocking Hills is a deeply dissected area of the Allegheny Plateau in Ohio, primarily in Hocking County, that features cliffs, gorges, rock shelters, and waterfalls. The relatively extreme topography in this area is due to the Blackhand Sandstone (so named because of Native American graphics on the formation near Newark, Ohio), a particular formation that is thick, hard and weather-resistant, and so forms high cliffs and narrow, deep gorges. Component open-space areas Most of the more scenic areas of the region are under state ownership, including: *Hocking Hills State Park (with five use areas: Ash Cave, Cedar Falls, Old Man's Cave, Rockhouse, and Cantwell Cliffs) *Hocking State Forest *Conkle's Hollow State Nature Preserve *Sheick Hollow State Nature Preserve (entry by permit only) *Little Rocky Hollow State Nature Preserve (entry by permit only) * Kessler Swamp State Nature Preserve * Lake Logan State Park *Wayne National Forest *Rockbridge State Nature Preserve The core ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_in_the_Nepal_Himalayas.jpg "Click for more on -> Circumhorizontal Arc")
