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Remember Plouffe's Inverter? This is way better. Type in a real number and find out what interesting equations it satisfies, or nearly satisfies.
Last week's xkcd #1047 featured a bunch of "slightly wrong equations." Many of them came from +Robert Munafo's delightful approximation-finder REIS, and since then he's made it available on the web.

Check out to find what your favorite number is almost, but not quite, equal to.
RIES - Find Algebraic Equations, Given Their Solution -- Explore a wide variety of topics from large numbers to sociology at
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I guess the physicists need to brace for the incipient popularity of such tools among "theory of everything" enthusiasts and the like...
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