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Shiranui (other)
is an atmospheric ghost light told about in Kyushu. They are said to appear on days of the noon moon such the (29th or 30th day) of the seventh month of the lunisolar Japanese calendar when the wind is weak, in the Yatsushiro Sea and the Ariake Sea. The phenomenon persists in the present day, with the strange lights having been determined to be an atmospheric optical phenomenon. Summary The phenomenon occurs several kilometers out from the shore in open water. First, one or two flames (called "oyabi" (親火, lit. "parent-fire")) will appear. These will split off to the left and right and multiply, eventually producing anywhere from several hundred to several thousand flames in a row. They are said to span four to eight kilometers. It is believed that the greatest number of shiranui can be seen at the lowest tide, within two hours of 3:00AM. They are said to be invisible from the water's surface and visible up to ten meters above the surface. If one attempts to approach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenryo Shiranui
The Tokugawa shogunate (, Japanese 徳川幕府 ''Tokugawa bakufu''), also known as the , was the military government of Japan during the Edo period from 1603 to 1868. Nussbaum, Louis-Frédéric. (2005)"''Tokugawa-jidai''"in ''Japan Encyclopedia'', p. 978.Nussbaum"''Edo-jidai''"at p. 167. The Tokugawa shogunate was established by Tokugawa Ieyasu after victory at the Battle of Sekigahara, ending the civil wars of the Sengoku period following the collapse of the Ashikaga shogunate. Ieyasu became the ''shōgun,'' and the Tokugawa clan governed Japan from Edo Castle in the eastern city of Edo (Tokyo) along with the ''daimyō'' lords of the ''samurai'' class.Nussbaum"Tokugawa"at p. 976. The Tokugawa shogunate organized Japanese society under the strict Tokugawa class system and banned most foreigners under the isolationist policies of ''Sakoku'' to promote political stability. The Tokugawa shoguns governed Japan in a feudal system, with each ''daimyō'' administering a ''han'' (fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star
A star is an astronomical object comprising a luminous spheroid of plasma (physics), plasma held together by its gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night sky, night, but their immense distances from Earth make them appear as fixed stars, fixed points of light. The most prominent stars have been categorised into constellations and asterism (astronomy), asterisms, and many of the brightest stars have proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. The observable universe contains an estimated to stars. Only about 4,000 of these stars are visible to the naked eye, all within the Milky Way galaxy. A star's life star formation, begins with the gravitational collapse of a gaseous nebula of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Its stellar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kitsunebi
Kitsunebi (狐火) is an atmospheric ghost light told about in legends all across Japan outside Okinawa Prefecture.村上健司編著 『妖怪事典』 毎日新聞社、2000年、134頁。。 They are also called "hitobosu", "hitomoshi" (火点し), and "rinka" (燐火). Overview Kimimori Sarashina, a researcher of local stories, summarizes the features of the kitsunebi as follows: in places where there'd be no presence of fire, mysterious flames like those of paper lantern or a torch would appear in a line and flicker in and out, with fires that have gone out sometimes even appearing in yet another place, so that if one attempted to chase after what was behind all this, it would disappear in the middle. When they appear between spring and autumn, they show up especially in hot summers and appear easily when it is cloudy when the weather is changing. They are said to appear from between ten and several hundred in a line, and just when one thinks that they have increased, they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hitodama
In Japanese folklore, Hitodama (Japanese ; meaning "human soul") are balls of fire that mainly float in the middle of the night.広辞苑 第五版 p.2255 「人魂」 They are said to be "souls of the dead that have separated from their bodies," which is where their name comes from. Summary Hitodama are mentioned in literature from ancient times. In the Man'yōshū, there is the following poem: They are frequently confused with onibi and kitsunebi, but since hitodama are considered to be the "appearance of souls that have left the body and fly through the air," they are strictly speaking a different general idea. Concerning their shape and nature, there are common features throughout Japan, but some differences could also be seen depending on the area. They fly crawling along at an elevation that is not very high. They have a color that is blue, orange, or red, and also have a tail, but it can either be short or long. There are also a few that have been seen during daytime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heat Shimmer
A mirage is a naturally-occurring optical phenomenon in which light rays bend via refraction to produce a displaced image of distant objects or the sky. The word comes to English via the French ''(se) mirer'', from the Latin ''mirari'', meaning "to look at, to wonder at". Mirages can be categorized as "inferior" (meaning lower), "superior" (meaning higher) and " Fata Morgana", one kind of superior mirage consisting of a series of unusually elaborate, vertically stacked images, which form one rapidly-changing mirage. In contrast to a hallucination, a mirage is a real optical phenomenon that can be captured on camera, since light rays are actually refracted to form the false image at the observer's location. What the image appears to represent, however, is determined by the interpretive faculties of the human mind. For example, inferior images on land are very easily mistaken for the reflections from a small body of water. Inferior mirage In an inferior mirage, the mirage ima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noctiluca
''Noctiluca scintillans'' is a marine species of dinoflagellate that can exist in a green or red form, depending on the pigmentation in its vacuoles. It can be found worldwide, but its geographical distribution varies depending on whether it is green or red. This unicellular microorganism is known for its ability to bioluminesce, giving the water a bright blue glow seen at night. However, blooms of this species can be responsible for environmental hazards, such as toxic red tides. They may also be an indicator of anthropogenic eutrophication. Etymology The name ''Noctiluca scintillans'' comes from Latin; ''Noctiluca'' means "light, light at night" and ''scintillans'' means "shining, throwing out flashes of light". Description Taxonomy It was classified with the jellyfish until 1873 when Haeckel then decided to move it to the crystoflagellates with the dinoflagellates. This remained the case until 1920 when Kofoid finally placed it in the order Noctilucales following certai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sakuhei Fujiwhara
was a Japanese meteorologist who became the namesake for the Fujiwhara effect. Novelist Jirō Nitta is his nephew and mathematician Masahiko Fujiwara is his grandnephew. Biography Early life Born in the city of Suwa, Nagano Prefecture, Fujiwhara received his primary education at Takashima Common Elementary School and Suwa Higher Elementary School, where he was in the same class as future army general, Tetsuzan Nagata. He was also close friends with Shigeo Iwanami, who would go on to found the Iwanami Shoten Publishing company. He joined the Central Meteorological Observatory (current Japan Meteorological Agency) in 1909 after completing undergraduate studies in theoretical physics at Tokyo Imperial University (now the University of Tokyo). Academic career Fujiwhara earned his doctorate in 1915 through his research work on the abnormal propagation of sound waves, and earned the Japan Academy Prize in 1920 in recognition of his research. He traveled to Norway in the same year to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Illusion
Within visual perception, an optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual perception, percept that arguably appears to differ from reality. Illusions come in a wide variety; their categorization is difficult because the underlying cause is often not clear but a classification proposed by Richard Gregory is useful as an orientation. According to that, there are three main classes: physical, physiological, and cognitive illusions, and in each class there are four kinds: Ambiguities, distortions, paradoxes, and fictions. A classical example for a physical distortion would be the apparent bending of a stick half immerged in water; an example for a physiological paradox is the motion aftereffect (where, despite movement, position remains unchanged). An example for a physiological fiction is an afterimage. Three typical cognitive distortions are the Ponzo illusion, Ponzo, Poggendorff illusion, Poggendorff, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiative Cooling
In the study of heat transfer, radiative cooling is the process by which a body loses heat by thermal radiation. As Planck's law describes, every physical body spontaneously and continuously emits electromagnetic radiation. Radiative cooling has been applied in various contexts throughout human history, including ice making in India and Iran, heat shields for spacecrafts, and in architecture. In 2014, a scientific breakthrough in the use of photonic metamaterials made daytime radiative cooling possible. It has since been proposed as a strategy to mitigate local and global warming caused by greenhouse gas emissions known as passive daytime radiative cooling. Terrestrial radiative cooling Mechanism Infrared radiation can pass through dry, clear air in the wavelength range of 8–13 µm. Materials that can absorb energy and radiate it in those wavelengths exhibit a strong cooling effect. Materials that can also reflect 95% or more of sunlight in the 200 nanometres to 2. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudflat
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Austral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shōwa Era
The was the period of Japanese history corresponding to the reign of Emperor Shōwa ( Hirohito) from December 25, 1926, until his death on January 7, 1989. It was preceded by the Taishō era. The pre-1945 and post-war Shōwa periods are almost completely different states: the pre-1945 Shōwa era (1926–1945) concerns the Empire of Japan, and post-1945 Shōwa era (1945–1989) concerns the State of Japan. Before 1945, Japan moved into political totalitarianism, ultranationalism and statism culminating in Japan's invasion of China in 1937, part of a global period of social upheavals and conflicts such as the Great Depression and World War II. Defeat in the Second World War brought about radical change in Japan. For the first and only time in its history, Japan was occupied by foreign powers, an American-led occupation which lasted for seven years. Allied occupation brought forth sweeping democratic reforms. It led to the formal end of the emperor's status as a demigod and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirage
A mirage is a naturally-occurring optical phenomenon in which light rays bend via refraction to produce a displaced image of distant objects or the sky. The word comes to English via the French ''(se) mirer'', from the Latin ''mirari'', meaning "to look at, to wonder at". Mirages can be categorized as "inferior" (meaning lower), "superior" (meaning higher) and " Fata Morgana", one kind of superior mirage consisting of a series of unusually elaborate, vertically stacked images, which form one rapidly-changing mirage. In contrast to a hallucination, a mirage is a real optical phenomenon that can be captured on camera, since light rays are actually refracted to form the false image at the observer's location. What the image appears to represent, however, is determined by the interpretive faculties of the human mind. For example, inferior images on land are very easily mistaken for the reflections from a small body of water. Inferior mirage In an inferior mirage, the mirage ima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
