specific gravity

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Related to relative density: Archimedes Principle

gravity

 [grav´ĭ-te]
1. the phenomenon by which two bodies having mass are attracted to each other.
2. the gravitational attraction near a large body having mass, particularly near or on the surface of a planet or star.
specific gravity see specific gravity.
standard gravity (€g) the acceleration due to gravity at mean sea level, 9.80616 meters per second squared.

specific

 [spĕ-sif´ik]
1. pertaining to a species.
2. produced by a single kind of microorganism.
3. restricted to a particular structure or function, such as in application or effect.
4. a remedy specially indicated for a particular disease.
5. in immunology, pertaining to the special affinity of antigen for the corresponding antibody.
specific gravity the weight of a substance compared with the weight of an equal amount of some other substance taken as a standard. For liquids the usual standard is water. The specific gravity of water is 1; if a sample of urine shows a specific gravity of 1.025, this means that the urine is 1.025 times heavier than water. (The normal specific gravity of urine is 1.003–1.030.) Specific gravity is measured by means of a hydrometer.

spe·cif·ic grav·i·ty (sp. gr.),

the weight of any body compared with that of another body of equal volume regarded as the unit; usually the weight of a liquid compared with that of distilled water.

specific gravity (sp. gr.)

the ratio of the density of a substance to the density of another substance accepted as a standard. The usual standard for liquids and solids is water. Thus a liquid or solid with a specific gravity of 4 is four times as dense as water at the same temperature. Hydrogen is the usual standard for gases. See also density, mass.

specific gravity

Lab medicine A measure of the solutes in a fluid; SG is detected in the urine, based on the response of a polymeric acid to surrounding ions. See Dipstick. Cf Nitrites Nephrology The SG reflects the kidney's ability to concentrate urine: if a random urine specimen has an SG > 1. 023, the kidney's ability to concentrate is assumed to be normal ; SG ↑ in SIADH, uncontrolled DM, proteinuria, eclampsia and obstructive uropathy and ↓ in renal tubular damage, chronic renal insufficiency, diabetes insipidus, malignant HTN Occupational safety A physical parameter of a liquid that indicates how heavy it is in relationship to air–≤ 1.0 = lighter than water; ≥ 1.0 = heavier than water, a datum of interest to OSHA, which requires listing of SGs in its Materials Safety Data Sheets

spe·cif·ic grav·i·ty

(spĕ-sif'ik grav'i-tē)
The weight of any body compared with that of another body of equal volume regarded as the unit; usually the weight of a liquid compared with that of distilled water.

specific gravity

the relative density of one body or object compared to another. If compared to water, an object will float if its specific gravity is less than 1.0 (assuming water has a density of 1.0 kg.m-3).

specific gravity

weight (in g) of 1ml of a substance compared with weight (in g) of 1ml of a reference substance

specific gravity (SG),

n a measurement calculated by dividing the mass of the desired volume of a substance by the mass of an equivalent volume of water. Both measurements must be taken under identical pressure and temperature conditions. Used to determine the presence of impurities within an essential oil. Also used in diagnostic analysis of fluids such as urine.

spe·cif·ic grav·i·ty

(spĕ-sif'ik grav'i-tē)
The weight of any body compared with that of another body of equal volume regarded as the unit; usually the weight of a liquid compared with that of distilled water.

specific gravity,

References in periodicals archive ?
Relative frequency, relative density, relative abundance, importance value, basal area, and density of saplings following a wildfire in the Dugger Mountain Wilderness, Talladega National Forest, Alabama Sapling Relative Relative Relative Importance Density species Acer rubrum 23.
Code = 0 if plot was not fertilized; code = 1 if fertilized with 224 kg/ ha (200 lb/acre) N as urea at establishment and every 4 y since Independent plot variables, n = 54 ISTEMS Avg trees per hectare present at establishment on the entire installation before spacing to the ISPA densities IRD Curtis' relative density (1982) at establishment before spacing to the ISPA densities; plot basal area, in [m.
Overall, relative density has decreased for every species except Elliptio dilatata, Epioblasma triquetra, Fusconaia flava and Villosa iris.
06 * Columns are coded as: RDO = relative dominance, RDE = relative density, RF = relative percent frequency, I = importance index.
Wong & Bundy (1985) who found the distribution of filarial worm Ochoternella digiticauda and of the trematode Mesocoelium monas in Bufo marinus as over dispersed, suggested that heterogeneity in exposure, relative density in distribution of molluscan and anthropoid intermediate hosts and heterogeneity in host susceptibility, such as variation in the host immune response may be involved, in generation of the over dispersed distribution.
Total phytoplankton abundance presented similar seasonal trends in the two places of study; however frequency and relative density of microalgal species differed between estuarine and open shore sites.
Temperature, relative density, and composition of gas, atmospheric temperature, and retort pressure were measured by quality control department of the shale oil plant.
Relative density and relative dominance were calculated in each quadrat using the following formulas (4):
The researchers theorize that these children may not develop enough white matter, the axon-rich tissue primarily located below the cortex, thus increasing the relative density of gray matter.
Therefore the distribution of the first surface reflectance is determined by the distribution of the micro-facet normals which in turn is driven by the density function [equivalent to] ([THETA]), the relative density of micro-facet normals (per steradian) in vector direction [THETA].
We characterized population cycles by changes in relative density ([D.

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