Porosity is expressed as the volume not occupied by solid material
n = Vv / V
= 1 - ρbulk / ρsolid (1)
n = porosity
Vv = void volume (m3, ft3)
V = total volume (m3, ft3)
ρbulk = bulk density (kg/m3, slugs/ft3)
ρsolid = solid density (kg/m3, slugs/ft3)
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
Air filters efficiency and arrestance.
Classification of coal based on volatile matter and cooking power of clean material.
An introduction to density, specific weight and specific gravity.
Bulk densities of some common food products like grain, corn, barley, sugar and more.
Thermal conductivity - k-values - vs. temperature.
Soil and rock expansion - or swell - after mining.