By dotCore
via annualletter.gatesfoundation.org
Submitted: Jan 31 2013 / 22:35
Over the holidays I read The Most Powerful Idea in the World, a brilliant chronicle by William Rosen of the many innovations it took to harness steam power. Among the most important were a new way to measure the energy output of engines and a micrometer dubbed the "Lord Chancellor," able to gauge tiny distances.
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