About
Alchemy is an early protoscientific and philosophical discipline combining the elements of chemistry, metallurgy, physics, medicine, astrology, semiotics, mysticism, and art. Alchemy has been practiced in ancient Egypt, India, and China, in Classical Greece and Rome, in the Islamic empire, and then in Europe up to the 19th century — in a complex network of schools and philosophical systems spanning at least 2500 years.
The alchemists did not follow what is now known as the scientific method, and much of the "knowledge" they produced was later found to be banal, limited, wrong, or just meaningless. Today, the discipline is of interest mainly to historians of science and philosophy, and for its mystic, esoteric, and artistic aspects. Nevertheless, alchemy was one of the main precursors of modern sciences, and we owe to the ancient alchemists the discovery of many substances and processes that are the mainstay of modern chemical and metallurgical industries.
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