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The Vernian scholar, William Butcher, to sum up a complex situation of locating Tabor Island in real life, explains that Verne positions Tabor 153 degrees W of both Paris (as in Castaways) and Greenwich (as in Mysterious Island), whereas in real life it would be about 151 or 153 degrees W of only Greenwich (according to Krauth and Faivre ...
India's arable land area of 1,597,000 km 2 (394.6 million acres) is the second largest in the world, after the United States. Its gross irrigated crop area of 826,000 km 2 (215.6 million acres) is the largest in the world, followed by US and China. [ 71 ]
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The Great Trigonometrical Survey of India was a project that aimed to carry out a survey across the Indian subcontinent with scientific precision. It was begun in 1802 by the British infantry officer William Lambton , under the auspices of the East India Company . [ 1 ]
Maps, and others) use a variant of the Mercator projection for their map images [23] called Web Mercator or Google Web Mercator. Despite its obvious scale variation at the world level (small scales), the projection is well-suited as an interactive world map that can be zoomed seamlessly to local (large-scale) maps, where there is relatively ...
India, officially the Republic of India, [j] [21] is a country in South Asia. It is the seventh-largest country by area ; the most populous country from June 2023 onwards; [ 22 ] [ 23 ] and since its independence in 1947, the world's most populous democracy.
In China, Pei Xiu (224–271) identified "measuring right angles and acute angles" as the fifth of his six principles for accurate map-making, necessary to accurately establish distances, [5] while Liu Hui (c. 263) gives a version of the calculation above, for measuring perpendicular distances to inaccessible places.
Joseph E. Schwartzberg (2008) proposes that the Bronze Age [[Indus Valley Civilization]] (c. 2500–1900 BCE) may have known "cartographic activity" based on a number of excavated surveying instruments and measuring rods and that the use of large scale constructional plans, cosmological drawings, and cartographic material was known in India with some regularity since the Vedic period (1st ...