Technical Bulletin, Issue 248The Department, 1931 - Agriculture |
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Common terms and phrases
absorption of liquids absorption of water Annual growth ring aperture b₁ b₂ bound liquid bound water bulletin c₁ capillary forces capillary pressure capillary tension cell cavities cell wall coal tar constant creosote determining the fiber-saturation diameter diffusion diffusion equations drying of wood drying surface EFFECT OF MOISTURE effect of pressure electrical resistance equation equilibrium evaporating surface experimental data fiber-saturation point flow of liquids free liquid free water hardwoods heat of absorption idealized wood structure impact turbulence impregnation of wood kick back large number longitudinal MacLean's mechanism Megohms meniscus moisture gradients movement of free piece of wood pit membranes quantitative radial radius required to fill resin canal saturation point shown in Figure shrinkage Sitka spruce softwoods spring wood summer wood surface film surface tension swelling tangential temperature thermal conductivity tracheids trapped air tube vapor pressure variation viscosity on penetration water by wood wet the wood wood rays wood substance wood-liquid relations