Labels:text | circle | screenshot | design OCR: Leonardo's reasoning was correct. He had studied reflected light, and his painting experience had given him an understanding of contrasts: "And this difference in the background arises from the fact that the part of it which borders on the illuminated portion of the moon, by comparison with that brightness shows itself darker than it is. ... If you want to see how much brighter the shaded part of the moon is than its background, hide from sight, with your hand or with some other object farther away, the luminous part of the moon." (2r) Demonstrate moon earth sun
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