A motif is a recurring symbol which takes on a figurative meaning. We see them in books, films, and poems. In fact, almost every text commonly uses the literary device of the motif. A motif can be almost anything: an idea, an object, a concept, a character archetype, the weather, a color, or even a statement.
The Specific Gravity of liquids and solids is defined as a dimensionless unit which is the ratio of density of a material to the density of water at a given temperature, where density is defined as the materialâs mass per unit volume and is measured in kg/m 3.
Specific Gravity and Density tests can be used to identify a material or to follow physical changes in a sample. Specific Gravity and Density tests can also be used to indicate the degree of uniformity or variability among different sampling units or specimens, or to indicate the average density of a large item.ASTM Standards: 1  D1475.bout Specific Gravity & Density Determiniation. Specific Gravity is a measure of the ratio of the mass of a given volume of material at 23 Â°C to the same volume of water.