Theory 163/Timber drying/Rate lens
Drying Follows Diffusion
The claim
Timber drying rate is set by the rate of moisture diffusion through the wood rather than by surface evaporation.
01Mechanism
Water must move from the interior to the surface; the internal gradient limits the rate once the surface dries.
02Prediction
Rate should track diffusion.
03Refutation
Rate tracking air speed would remove internal transport.