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Newspaper
Juvenile Library
Location
London, Middlesex, United Kingdom
Date
Jan 01, 1801
Page
19
The text describes air density increasing downward in powers of two from top to bottom, with each inch gaining density as 1 2 4 8 16 32 64. It then projects density declines with height, positing five miles as twice as thin and outlining leagues of seven miles with fourfold density changes. It presents method to compute density at various altitudes.
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