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2. Encyclopedia Britannica on the head of a pin: Assume that there are 26 volumes (A-Z) each of 1000 pages, each page being a 6x10 inches. How many times does the entire surface area have to be demagnified to fit into the head of a pin (diameter 0.5 mm)? Assuming 50 characters across a line of each page, how many iron atoms would there be across each character (Fe atomic diameter = 0.25 nm)?
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