|
Broken Hill Skull (Replica01)
Kabwe 1, also known as Broken Hill Man or Rhodesian Man, is a nearly complete archaic human skull discovered in 1921 at the Kabwe mine, Zambia (at the time, Broken Hill mine, Northern Rhodesia). It dates to around 300,000 years ago, possibly contemporaneous with modern humans and ''Homo naledi''. It was the first archaic human fossil discovered in Africa. Kabwe 1 was found near an exceptionally well-preserved tibia, as well as a femur, femoral fragment and potentially other bones whose provenance is uncertain. The fossils were sent to the British Museum, where English palaeontologist Sir Arthur Smith Woodward described them as a new species: ''Homo rhodesiensis''. Kabwe 1 is now generally classified as ''Homo heidelbergensis, H. heidelbergensis''. Zambia is negotiating with the UK for repatriation of the fossil. Kabwe 1 is characterised by a massive brow ridge (supraorbital torus), a low and long forehead, a prominence at the back of the skull, thickened bone, and a proportional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homo Heidelbergensis
''Homo heidelbergensis'' is a species of archaic human from the Middle Pleistocene of Europe and Africa, as well as potentially Asia depending on the taxonomic convention used. The species-level classification of ''Homo'' during the Middle Pleistocene is controversial, called the "muddle in the middle", owing to the wide anatomical range of variation that populations exhibited during this time. ''H. heidelbergensis'' has been regarded as either the last common ancestor of modern humans, Neanderthals, and Denisovans; or as a completely separate lineage. ''H. heidelbergensis'' was species description, described by German anthropologist Otto Schoetensack in 1908 based on a jawbone, Mauer 1, from a sand mining, sand pit near the village of Mauer (Baden), Mauer — southeast of Heidelberg. It was the oldest identified human fossil in Europe, and Schoetensack described it as an antediluvian race (before the Great Flood) which would eventually evolve into living Europeans. By the mid-2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miombo
Miombo woodland is a tropical and subtropical grasslands, savannas, and shrublands biome (in the World Wide Fund for Nature scheme) located in central and southern tropical Africa. It includes three woodland savanna ecoregions (listed below) characterized by the dominant presence of '' Brachystegia'' and '' Julbernardia'' genera of trees, and has a range of climates ranging from humid to semi-arid, and tropical to subtropical or even temperate. The trees characteristically shed their leaves for a short period in the dry season to reduce water loss and produce a flush of new leaves just before the onset of the wet season with rich gold and red colours masking the underlying chlorophyll, reminiscent of autumn colours in the temperate zone. Miombo woodlands extend across south-central Africa, running from Angola in the west to Tanzania in the east, including parts of Democratic Republic of the Congo, Malawi, Mozambique, Zambia, and Zimbabwe. They are bounded on the north by the humid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osteology
Osteology () is the scientific study of bones, practiced by osteologists . A subdiscipline of anatomy, anthropology, archaeology and paleontology, osteology is the detailed study of the structure of bones, skeletal elements, teeth, microbone morphology, function, disease, pathology, the process of ossification from cartilaginous molds, and the resistance and hardness of bones (biophysics). Osteologists frequently work in the public and private sector as consultants for museums, scientists for research laboratories, scientists for medical investigations and/or for companies producing osteological reproductions in an academic context. The role of an osteologist entails understanding the macroscopic and microscopic anatomies of bones for both humans and non-humans (courses in non-human osteology is known as zooarchaeology). Osteology and osteologists should not be confused with the pseudoscientific practice of osteopathy and its practitioners, osteopaths. Methods A typica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Illustrated London News
''The Illustrated London News'', founded by Herbert Ingram and first published on Saturday 14 May 1842, was the world's first illustrated weekly news magazine. The magazine was published weekly for most of its existence, switched to a less frequent publication schedule in 1971, and eventually ceased publication in 2003. The company continues today as Illustrated London News Ltd, a publishing, content, and digital agency in London, which holds the publication and business archives of the magazine. History 1842–1860: Herbert Ingram ''The Illustrated London News'' founder Herbert Ingram was born in Boston, Lincolnshire, in 1811, and opened a printing, newsagent, and bookselling business in Nottingham around 1834 in partnership with his brother-in-law, Nathaniel Cooke.Isabel Bailey"Ingram, Herbert (1811–1860)" ''Oxford Dictionary of National Biography'', Oxford University Press, 2004 accessed 17 September 2014] As a newsagent, Ingram was struck by the reliable increase in news ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrometallurgy
Electrometallurgy is a method in metallurgy that uses electrical energy to produce metals by electrolysis. It is usually the last stage in metal production and is therefore preceded by Pyrometallurgy, pyrometallurgical or Hydrometallurgy, hydrometallurgical operations. The electrolysis can be done on a molten metal oxide (smelt electrolysis) which is used for example to produce aluminium from aluminium oxide via the Hall–Héroult process, Hall-Hérault process. Electrolysis can be used as a final refining stage in pyrometallurgical metal production (electrorefining) and it is also used for reduction of a metal from an aqueous metal salt solution produced by hydrometallurgy (electrowinning). Processes Electrometallurgy is the field concerned with the processes of metal Electrophoretic deposition, electrodeposition. There are seven categories of these processes: *Electrolysis *Electrowinning, the extraction of metal from ores *Electrorefining, the purification of metals. Powde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleš Hrdlička
Alois Ferdinand Hrdlička, after 1918 changed to Aleš Hrdlička (; March 30,HRDLICKA, ALES in ''Marquis Who's Who'' (1902 edition) (via archive.org) 1869 – September 5, 1943), was a Czechs, Czech Anthropology, anthropologist who lived in the United States after his family had moved there in 1881. He was born in Humpolec, Bohemia (today in the Czech Republic). Hrdlička was a pioneer in the field of anthropology and the first curator of physical anthropology of the Smithsonian Museum from 1904 until 1941. He correctly theorized that migration from Asia to the Americas via the Bering Strait was the origin of the Indigenous people of the Americas, American Indians, but incorrectly dated that migration as having occurred not more than 3,000 years ago. He initially denied evidence by archaeological findings such as that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcite
Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on the Mohs scale of mineral hardness, based on Scratch hardness, scratch hardness comparison. Large calcite crystals are used in optical equipment, and limestone composed mostly of calcite has numerous uses. Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 °C, and vaterite is even less stable. Etymology Calcite is derived from the German , a term from the 19th century that came from the Latin word for Lime (material), lime, (genitive ) with the suffix ''-ite'' used to name minerals. It is thus a Doublet (linguistics), doublet of the word ''wikt:chalk, chalk''. When applied by archaeology, archaeologists and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stone Tool
Stone tools have been used throughout human history but are most closely associated with prehistoric cultures and in particular those of the Stone Age. Stone tools may be made of either ground stone or knapped stone, the latter fashioned by a craftsman called a flintknapper. Stone has been used to make a wide variety of tools throughout history, including arrowheads, spearheads, hand axes, and querns. Knapped stone tools are nearly ubiquitous in pre-metal-using societies because they are easily manufactured, the tool stone raw material is usually plentiful, and they are easy to transport and sharpen. The study of stone tools is a cornerstone of prehistoric archaeology because they are essentially indestructible and therefore a ubiquitous component of the archaeological record. Ethnoarchaeology is used to further the understanding and cultural implications of stone tool use and manufacture. Knapped stone tools are made from cryptocrystalline materials such as chert, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inselberg
An inselberg or monadnock ( ) is an isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain. In Southern Africa, a similar formation of granite is known as a koppie, an Afrikaans word ("little head") from the Dutch diminutive word ''kopje''. If the inselberg is dome-shaped and formed from granite or gneiss, it can also be called a bornhardt, though not all bornhardts are inselbergs. An inselberg results when a body of rock resistant to erosion, such as granite, occurring within a body of softer rocks, is exposed by differential erosion and lowering of the surrounding landscape. Etymology Inselberg The word ''inselberg'' is a loan word from German, and means "island mountain". The term was coined in 1900 by geologist Wilhelm Bornhardt (1864–1946) to describe the abundance of such features found in eastern Africa. At that time, the term applied only to arid landscape features. However, it has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broken Hill Ore Deposit
The Broken Hill Ore Deposit is located underneath Broken Hill in western New South Wales, Australia, and is the namesake for the town. It is arguably the world's richest and largest zinc-lead ore deposit. History Discovery Charles Sturt made a pencil sketch of the area in 1844 and noted iron ore along an isolated hill. In 1866 the Mount Gipps sheep station named their paddock, which embraced the lode outcrop, Broken Hill. However, the hill was thought to be mullock. On 5 September 1883, a Mount Gipps boundary rider named Charles Rasp staked a claim on the outcrop because it looked like tin oxide as described in his prospecting guide book. With six others he staked the entire outcrop. In 1884, the syndicate reorganized as the Broken Hill Mining Company. Horn silver was discovered in 1885 and the Broken Hill Proprietary Company Limited was incorporated. Charles Rasp discovered the gossan or weathered sulfide outcrop of massive lead-zinc sulfides on a feature know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cecil Rhodes
Cecil John Rhodes ( ; 5 July 185326 March 1902) was an English-South African mining magnate and politician in southern Africa who served as Prime Minister of the Cape Colony from 1890 to 1896. He and his British South Africa Company founded the southern African territory of Rhodesia (region), Rhodesia (now Zimbabwe and Zambia), which the company named after him in 1895. He also devoted much effort to realising his vision of a Cape to Cairo Railway through British territory. Rhodes set up the Rhodes Scholarship, which is funded by his estate. The son of a vicar, Rhodes was born at Rhodes Arts Complex, Netteswell House, Bishop's Stortford, Hertfordshire. A sickly child, he was sent to South Africa by his family when he was 17 years old in the hope that the climate might improve his health. He entered the diamond trade at Kimberley, Northern Cape, Kimberley in 1871, when he was 18, and with funding from Rothschild & Co, began to systematically buy out and consolidate diamond mines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It is the second most abundant trace metal in humans after iron, an import ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
