Eratosthene In Birmingham United Kingdom

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Measuring the radius of the Earth THE ERASTOSTHENES’ METHOD King Edward VI High school For Girls 24 September 2009

Measuring the altitude of the sun : the instruments

Working on the Comenius Project

The method! ,[object Object],[object Object],[object Object]

The calculation  degs 360 degs = 4800 km C C = circumference of the Earth  = angle of Sun

Distance between Birmingham and the equator ,[object Object],[object Object],[object Object],[object Object]

Finding the circumference and radius of the Earth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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The time Autumn Equinox: 22 September 2009 C lock time for local noon will be at 13.01 ,[object Object],[object Object],[object Object],[object Object]

Finding the circumference of a melon using Eratosthenes’ method From our measurements, we found the circumference (C) of the melon to be 24.2cm, however the actual circumference was 48.1cm. Experimental uncertainty To find the experimental uncertainty, we first worked out how accurate our measurements were e.g. to the nearest centimetre. We then divided this number by the actual measurement and multiplied this by 100. We added all the uncertainties together to find the total. Our experimental uncertainty is 55%. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],d H Melon L Light rays Sticks Shadow a

Eratosthene In Birmingham United Kingdom

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Eratosthene In Birmingham United Kingdom