16 ene 681 año - Geber analyzed each Aristotelian element in terms of four basic qualities of hotness, coldness, dryness, and moistness. He theorized that every metal was a combination of these four principles, two of them interior and two exterior. He reasoned that the transmutation of one metal into another could be affected by the rearrangement of its basic qualities.
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16 ene 681 año
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~ 1345 years ago