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Science and Nature (capturing technological triumphs, defeats and horrors). The three subsections are: Photographic Art (early works of artists whose primary medium was photography); Trick Photography (infamous scams perpetrated through photographs); and; Stop Action (photos that are in fact captures taken from film).
Image credits: Old-time Photos To learn more about the fascinating world of photography from the past, we got in touch with Ed Padmore, founder of Vintage Photo Lab.Ed was kind enough to have a ...
Iron reaches the atmosphere through volcanism, [8] aeolian activity, [9] and some via combustion by humans. In the Anthropocene, iron is removed from mines in the crust and a portion re-deposited in waste repositories. [4] [6] The iron cycle (Fe) is the biogeochemical cycle of iron through the atmosphere, hydrosphere, biosphere and lithosphere.
Hematite and magnetite are the most common types of Iron ore. Roughly 98% of iron ore on the global market is used in iron and steel production. [8] The other 2% of iron ore is used to make powdered iron for certain types of steel, auto parts, and catalysts; radioactive iron for medicine; and iron blue in paints, inks, cosmetics, and plastics. [5]
Elemental iron is virtually absent on the Earth's surface except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths.Although iron is the fourth most abundant element in Earth's crust, composing about 5% by weight, [4] the vast majority is bound in silicate or, more rarely, carbonate minerals, and smelting pure iron from these minerals would require a prohibitive ...
However, iron artefacts of great age are much rarer than objects made of gold or silver due to the ease with which iron corrodes. [86] The technology developed slowly, and even after the discovery of smelting it took many centuries for iron to replace bronze as the metal of choice for tools and weapons.
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The Flatiron is a colored photograph made by Luxembourgish American photographer Edward Steichen.The photograph depicts the recently erected Flatiron Building in New York, taking inspiration from fellow photographers like Alfred Stieglitz, who had just photographed the building a year prior.