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These featured pictures, as scheduled below, appeared as the picture of the day (POTD) on the English Wikipedia's Main Page in October 2005.
You can add an automatically updating POTD template to your user page using {{Pic of the day}} (version with blurb) or {{POTD}} (version without blurb). For instructions on how to make custom POTD layouts, see Wikipedia:Picture of the day.Purge server cache
October 1
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The central electrode of a Plasma lamp, showing a glowing blue plasma streaming upwards. The colors are a result of the radiative recombination of electrons and ions and the relaxation of electrons in excited states back to lower energy states. These processes emit light in a spectrum characteristic of the gas being excited. Photo credit: PiccoloNamek |
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October 2
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Carts have many different shapes but the basic idea of transporting material (or maintaining a collection of materials in a portable fashion) remains. Carts usually have two or four wheels. Those with four wheels (also known as drays or wagons) will often have a pivoting front axle that has a pole connected to the collars or yoke of the two guiding draught animals. Photo credit: Fir0002 |
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October 3
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Magnetic resonance imaging is a commonly used form of medical imaging which creates images of the inside of opaque organs in living organisms and detects the amount of bound water in geological structures. It is primarily used to visualise alterations of living tissues. A functional MRI scan (shown in the image) measures signal changes in the brain that are due to changing neural activity. Image credit: Fastfission |
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October 4
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The geography of India is extremely diverse, with landscape ranging from snow-capped mountain ranges to deserts, plains, hills and plateaus. Climate ranges from equatorial in the far south, to tundra in the Himalayan altitudes. The Pangong Lake in Ladakh is a fine example of a mountain lake in the Himalayas. Photo credit: Martin Louis |
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October 5
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1980 eruption of Mount St. Helens, Washington, US. Mount St. Helens from Monitor Ridge showing the cone of devastation, the huge crater open to the north, and the post eruption lava dome inside it. The small photos were taken from Spirit Lake before and after the eruption. Spirit Lake can also be seen in the larger image, as well as two other Cascade volcanos. Image credit: Daniel Mayer, U.S. Forest Service and USGS | |
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October 6
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Mist is a phenomenon of a liquid in small droplets floating through air. It can occur naturally as part of normal weather or volcanic activity, and is common in cold air above hot water, in exhaled air in the cold, and in a steam room of a sauna. It can also be created artificially with aerosol canisters. Photo credit: Fir0002 |
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October 7
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A newborn joey (baby kangaroo) in its mother's pouch. Kangaroo babies are born at a very early stage of development after a gestation of 31-36 days. At this stage, only the forelimbs are somewhat developed, to allow the newborn to climb to the pouch and attach to a teat. It will not re-emerge for several months, during which time it develops fully. Photo credit: Geoff Shaw |
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October 8
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Sochi is the most popular Russian resort, situated in the Krasnodar Krai, near the Russian border with Abkhazia, Georgia. It is located in a spectacular natural setting with snow-capped peaks of the Caucasus mountains overlooking the Black Sea. This picture of the sunset at Sochi, taken by Prokudin-Gorskii in 1915, is an example of early colour photography. Photo credit: Sergei Mikhailovich Prokudin-Gorskii |
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October 9
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The Mallard, also known in North America as the Wild Duck, is a common and widespread dabbling duck which breeds throughout the temperate and sub-tropical areas. It is probably the best-known of all ducks. The females are light brown, with plumage much like most female dabbling ducks. They can be distinguished from other ducks, by the distinctive speculum. Photo credit: Martin Correns |
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October 10
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The LG-118A Peacekeeper missile system being tested at the Kwajalein Atoll in the Marshall Islands. The Peacekeeper can carry up to ten re-entry vehicles, each armed with a nuclear warhead with the explosive power of up to 300 kilotons, 25 times the power of the bomb dropped on Hiroshima at the end of World War II). Under the unratified START II treaty, all are to be removed from service by 2005. Photo credit: U.S. Army Forces Strategic Command |
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October 11
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The Senufo languages (Senoufo in Francophone usage) comprise ca. 15 languages spoken by the Senufo in the north of Côte d'Ivoire, the southeast of Mali and the southwest of Burkina Faso. An isolated language, Nafaanra, is also spoken in the northwest of Ghana. The Senufo languages are like Gur languages in that they have a suffixal noun class system and that verbs are marked for aspect. Most Gur languages to the north of Senufo have a two tone downstep system, but the tonal system of the Senufo languages is mostly analysed as a three level tone system. Photo credit: Mark Dingemanse |
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October 12
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A red sunset. The red-hue is explained by the phenomenon of Rayleigh scattering. The sunset is often more brightly coloured than the sunrise because there is more dust at the end of the day than at its beginning. Because the light from the Sun is bent by the variable density of the Earth's atmosphere, the Sun is still seen after it is below the horizon. Photo credit: Fir0002 |
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October 13
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A Lynx is any of several medium-sized wild cats. Lynxes have short tails, and usually a tuft of hair on the tip of the ears. They have large paws padded for walking on snow, and long whiskers on the face. The lynx inhabits high altitude forests with dense cover of shrubs, reeds and grass. Photo credit: Bernard Landgraf |
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October 14
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In the life cycle of a frog, a female lays her eggs in a shallow pond or creek, where they will be sheltered from the current and from predators. The eggs, known as frogspawn, hatch into tadpoles. The tadpoles develop gradually into adolescent froglets and finally the froglet develops into an adult frog. Photo credit: Tarquin |
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October 15
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A skull, or cranium, is a bony structure of vertebrates which serves as the general framework for a head. The skull supports the structures of the face and protects the brain against injury. This example of a hippopotamus 's skull also shows the large canine teeth, used for fighting, which can grow up to 50 cm long. Photo credit: Raul654 |
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October 16
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For five years after their completion in 1998, the Petronas Towers in Kuala Lumpur, Malaysia, were the world's tallest buildings. The architectural design by César Pelli includes motifs found in Islamic art — a reflection of Malaysia's Muslim heritage. In an unusual move, a different construction company was contracted to build each tower and set to compete against each other. The builders of Tower 2 won the race, despite starting a month behind Tower 1. Photo credit: Ángel Riesgo Martínez |
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October 17
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A Hansom cab is a kind of horse- drawn carriage first designed and patented in 1834 by Joseph Hansom, an architect from Leicestershire, England. Its purpose was to combine speed with safety, with a low center of gravity that was essential for safe cornering. The Hansom Cab was introduced to the United States during the late 19th century, and was most commonly used there in New York City. Photo credit: Solipsist |
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