Differential And Integral Calculus, With Applications
The book Differential And Integral Calculus, With Applications was written by author Greenhill, G. (George), Sir, 1847-1927 Here you can read free online of Differential And Integral Calculus, With Applications book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Differential And Integral Calculus, With Applications a good or bad book?
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200 SUCCESSIVE DIFFERENTIATION. 99. The Figure and Size of the Earth. i The size and figure of the Earth is inferred from the / measured length of a degree or minute of latitude at sea level ; the length is found to vary slightly with the , latitude, showing that the Earth is not exactly spherical ; but the length of a mean sexagesimal minute of latitude is i taken as one geographical, nautical, or sea mile (French mille), so that the length of a quadrant of a meridian is 90 X 60 = 5400 sea mil...es; and the length of the Admiralty measured mile being taken as 6080 feet, the circumference of the Earth is 360 X 60 x 6080 feet. On the Metric System the quadrant is divided cen- tesimally, and the mean centesimal minute of latitude is taken as the kilometre ; so that the quadrant is 10000 = 10 4 kilometres, or 10 7 metres, or 10 9 centimetres. This would make the metre = 3'2832 feet; but as the metre is more nearly 3"2809 feet, this shows that the quadrant is about 10007 kilometres; but for practical purposes it is sufficient to take the round numbers.
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