the term Arrow of Time in his book The Nature of the Physical World . He connected Time's Arrow to the one-way direction of increasing Entropy required by the Second Law of Thermodynamics . Links Wikipedia: http://en.wikipedia.org/wiki/Arthur_Eddington History of Math: http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Eddington.html The Information Philosopher: http://www.informationphilosopher.com/solutions/scientists/eddington Quotes: http://www-gap.dcs.st-and.ac.uk/~history/Quotations/Eddington.html Arthur Stanley Eddington, Stellar