Labels:text | screenshot | font OCR: FIRE Leonardo studied Ristoro d'Arezzo's Composition of the World and Aristotle's Meteorology, which taught that two elemental spheres lay between the earth and the heavens. The element of air, the sphere that directly encircled the earth, was filled with moist vapors. Fire, the second sphere, was a warm, dry, dark upper region where clouds could not form. (This elemental fire was regarded as being different from the fire of combustion.) AIR
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