The absence of material or an area devoid of materials where not intended.
An empty space. In relation to geology the empty space between grains in the soil or a rock.
Air pockets in the part which have opened or were not filed with material, leaving an opening or hole.
Empty spaces in sand, mortar, or grout.
Empty spaces in sand, mortar, grout, etc.
Pockets of unfilled space or vacuum in a molded part generally caused by shrinkage during cooling. Bubbles of air or other gases trapped in the part.
The spaces between the particles of a substance or of a mixture; used in connection with sand, broken stone, or gravel for concrete.
The undesirable formation of large cavities or pockets in a foam structure. Voids are usually caused by poor moldability or incorrect mold filling. In the case of foam buns, voids occur when then blowing and polymerization reactions are out of balance.
Air pockets trapped within a material, such as a plastic-fiberglass laminate.
(1) In a solid plastic, an unfilled space of such size that it scatters radiant energy such as light. (2) A cavity unintentionally formed in a cellular material and substantially larger than the individual cells.
Gas or air pockets trapped within a material.
Pockets of entrapped gas that have been cured into a laminate.
The presence of numerous small cavities within a material.
enormous regions of relatively empty space between galaxy superclusters
Empty pockets, or an absence of material, where not intended.
Air or gas that has been trapped and cured into a laminate. Porosity is an aggregation of microvoids. Voids are essentially incapable of transmitting structural stresses or nonradiative energy fields.