A page from Leonardo da Vinci’s Codex on the Flight of Birds, 1505. In this notebook, Da Vinci
A page from Leonardo da Vinci’s Codex on the Flight of Birds, 1505. In this notebook, Da Vinci tried to understand how birds’ wings, tails, and feathers worked together to help them maneuver in mid-air. He wrote these notes as he wrote many things, in backwards “mirror writing.” -- source link
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