tech
December 30, 2025
Leonardo’s wood charring method predates Japanese practice
Yakisugi, a Japanese technique of burning wood surfaces, creates a protective carbonized layer

TL;DR
- Leonardo da Vinci's notebooks may contain the earliest known reference to charring wood for preservation, a technique similar to Japanese Yakisugi.
- This method, documented in Codex Madrid II (1503-1505), predates written codifications of Yakisugi by over a century.
- The charred layer protects wood from water, fire, insects, and fungi, extending its lifespan.
- The discovery suggests a case of 'convergent invention' as there's no evidence of contact between Renaissance Europe and Japan regarding this practice.
- Leonardo's extensive notes also covered other material properties of wood, anatomical studies, and early concepts of physics, foreshadowing later scientific discoveries.
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