He wrote from right to left and his letters were mirrored because he did not want people to be able to easily understand his work.
When he ran out of paper, he would go back and start writing in the opposite direction on pages already used, in the free space.
Gears and linear motion
Do you see a face...if not, check out the next picture!
The bicycle!
Drawings of birds in right hand margin
The Codex Atlanticus, dating from 1478 to 1519, covers a great array of subjects, from flight to weaponry to musical instruments and from mathematics to botnay.
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