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Plutonium dating

William Gilbert - Some say (1544-1603) - English physician; known for his early studies on electricity and magnetism.His De magnete (1600) propounded the theory that the earth was a giant lodestone with north and south magnetic poles.The treatise was translated into English in 1912 by future U. president Herbert Hoover and his wife, Lou Henry Hoover. He became a devoted follower of Erasmus, who wrote a foreward to Agricola's first book on mining and metallurgy (1930).While town physician of Joachimsthal (now Jachymov, Czech Republic), he became intensely interested in all aspects of the mining and metallurgy industry by which the town thrived and began a 25-year study of the subject, which culminated in hos posthumously published masterpiece.

Empedocles presented a kind of biological theory of natural selection in an imaginative poem, On Nature.Heraclitus - Greek philosopher; first of the Greeks to develop a theory of the human soul; he praised its creative resources and spoke of the importance of self-exploration; he spoke of the logos that is common to all and said that the universe is ruled by logos; he always urged that close attention be given to the polarites and concealed structures emodied in language.His famous claim that an idividual can and cannot step into the same river twice reveals an interest in criteria of unity and identity; even though all material constituents have undergone change, it is still, in a sence, the same river.Between 14 he was in Strasbourg, probably working as a goldsmith, and here he may have begun printing.In 1438 he entered a contract with three others to develop a refined printing technique and became the inventor of moveable-type mechanical printing in Europe.

Empedocles - Some suggest (c.484-c.424) - Greek doctor, poet and philosopher.

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Plutonium dating introduction

Plutonium dating

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