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2 天前 · Ocean. Appearance. From Wikipedia, the free encyclopedia. This article is about natural science aspects of Earth's oceans. For more on human experience, history and culture of oceans, see Sea. For other uses, see Ocean (disambiguation). The ocean is the body of salt water that covers approximately 70.8% of Earth. [ 8 ] .
3 天前 · The viscosity of a fluid is a measure of its resistance to deformation at a given rate. [ 1] For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. [ 2] Viscosity is defined scientifically as a force multiplied by a time divided by an area.
2 天前 · The Caspian Sea is the largest inland body of water in the world by area and accounts for 40–44% of the total lake waters of the world, [24] and covers an area larger than Germany. The coastlines of the Caspian are shared by Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan.
2 天前 · Soon after Christopher Columbus came to the Caribbean, both Portuguese and Spanish explorers began claiming territories in Central and South America. These early colonies brought gold to Europe; most specifically England, the Netherlands, and France.
2 天前 · The Supermarine Spitfire is a British single-seat fighter aircraft used by the Royal Air Force and other Allied countries before, during, and after World War II. It was the only British fighter produced continuously throughout the war. The Spitfire remains popular among enthusiasts.
2 天前 · The Great Barrier Reef is the world's largest coral reef system, [1][2] composed of over 2,900 individual reefs [3] and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). [4][5] The reef is located in the Coral Sea, off the coast of Queensland ...
2 天前 · Werner Karl Heisenberg ( pronounced [ˈvɛʁnɐ kaʁl ˈhaɪzn̩bɛʁk] ⓘ; 5 December 1901 – 1 February 1976) [ 2] was a German theoretical physicist, one of the main pioneers of the theory of quantum mechanics, and a principal scientist in the Nazi nuclear weapons program during World War II.
