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Ease of scientific discovery over time.
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posted on 2013-02-20, 16:59 authored by Samuel Arbesman, Nicholas A. Christakis(A) Mean diameter (kilometers) of minor planets discovered, 1802–2008. (B) Mean physical size (g) of mammalian species discovered, 1760–2003. (C) Mean inverse of atomic weight of chemical elements discovered, 1669–2006. Adapted from [9].