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"In centuries past, kings and emperors appointed alchemists to discover, in their primitive furnaces, the "philosopher's stone" which would turn base metals into gold. Today, the conquest of nuclear energy is the modern philosopher's stone. This book, simply and nontechnically, (sic) explains to the layman the great discoveries of chemistryfrom early alchemy to the cyclotron." Look other Chemistry lessons: Welcome to the best eLearning video (English, German, French, Spanish language) and many more: Do not forget to check my blog! Updated regularly! No mirrors pls!