A painted room can be true from one point only, and the friars sit along sixty braccia of floor. I drive a nail into the head of Christ and snap the strings.
How Leonardo set the Last Supper's vanishing point high above the friars, drew its room with a nail and strings, and why his dry-wall paint began to fail.
Leonardo da Vinci
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November 8, 2026
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28 min
Why the far hills turn blue and then pale, why dry smoke is blue before black velvet and ashen before linen, and what I saw above me on Monboso.
Leonardo's aerial perspective: five times as far, five times bluer, the smoke and velvet test, the Codex Leicester blue sky, and what Tyndall and Rayleigh found.
Leonardo da Vinci
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November 8, 2026
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28 min
The glass, the pyramid of lines and the point of diminution, from Brunelleschi's panel to my own first rule, which was wrong.
Leonardo on linear perspective: the pyramid of sight and the pane of glass, why twice the distance looks half as tall, and the error in his first rule.
Leonardo da Vinci
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November 8, 2026
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31 min
How a day becomes an adventure when you look closely at the room around you.
Every day brings a fresh pile of hay to dive under and a new shadow beneath the table to explore. Here is what I have been noticing in my corner of the room lately.
Sammie
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October 19, 2026
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6 min