Moisture


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Related to Moisture: Moisture Meter, Soil moisture

moisture

[′mȯis·chər]
(climatology)
The quantity of precipitation or the precipitation effectiveness.
(meteorology)
The water vapor content of the atmosphere, or the total water substance (gaseous, liquid, and solid) present in a given volume of air.
(physical chemistry)
Water that is dispersed through a gas in the form of water vapor or small droplets, dispersed through a solid, or condensed on the surface of a solid.

Moisture

 

the water content of physical bodies. Moisture depends upon the relative humidity of the surrounding environment, upon the nature of the substance, and, in solids, also upon the degree of porosity and the size of the particles—that is, the general dimensions of the interior and exterior surfaces of the objects. The concept of moisture does not include the content of crystalline water or of chemically bound, so-called constitutional, water—for example, the H2O that is produced only during chemical decomposition.

Moisture is usually characterized by the quantity of water in a substance, expressed in the percentage of the original mass of the moist substance (moisture by mass) or its volume (volume moisture). Moisture can also be characterized as the moisture content, or absolute moisture—the quantity of water relative to a unit of weight of the dry portion of the substance. It is of great significance to the national economy to establish the acceptable degree of moisture for many products and materials; such substances as grain or cement are only useful up to a certain moisture content. The vitality of animal and plant organisms is possible only within certain limits of moisture and relative humidity of the surrounding atmosphere.

References in periodicals archive ?
You should always calibrate your moisture sensors to read 0 percent moisture when the aggregate is at SSD condition.
The work presented in this paper is the first step to account for simultaneous heat and moisture transfer in simulations of building envelope components and thus account for moisture durability issues caused by unintentional air exfiltration and infiltration during the design process.
A method is low moisture if it has a fast drying time that allows fibers to dry in their natural state in two hours or less at 65 percent relative humidity and 70 degrees F.
Gravimetric soil moisture (mg) value was obtained from laboratory analysis using civil engineering standards (IS 2720 Part 2, 1973), which was converted to volumetric soil moisture (Mv) by multiplying the dry density(frf).
A 20-gram sample/replicate was retained for moisture content determination before and after blanching.
The Alpha approximation model is appealing for soil moisture retrieval due to its simplicity, and this method requires the initial estimates of soil moisture boundary.
Extended moisture exposure to interior building components causes fungal growth, deterioration, and eventual weakening and/or failure of the material.
A number of specialty resins, such as polyphthalamide (PPA), have significant amounts of aromatic character in their polymeric backbone, which causes them to absorb less moisture than aliphatic nylons like nylons 6 and 66, and do so at a slower rate.
Then the nuggets were frozen, blended into powder and analyzed for moisture and oil content.
Don) is the most produced wood in Japan, but it is considered a difficult tree species to dry because the moisture content of its heartwood is high and moisture content variation between individuals is large (Nakada et al.
Soil moisture is an important factor influencing oviposition in several scarabs, including Phyllophaga species (Sweetman 1931; Gaylor & Frankie 1979), Cyclocephala species, Ligyrus subtropicus Blatchley (Potter 1983; Cherry et al.