Today at College, a debate was raised about gravity and geography didn't feature in it at all! However, it should have done, because there's actually a 'Gravity Model' in the study of Migration. It is based on Newton's law of universal gravitation, and assumes a town's attraction is proportional to its size. Therefore, a town twice the size of another will have twice the pull and attract twice as many migrants. (For further information, have a look at 'Reilly's Law of Retail Gravitation 1931'. It's not all physics you know!
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