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.
The ratio of the density of a material at a given temperature to the density of an equal volume of water at the same temperature. Units = none. Test reference: ASTM D 792, D 1505 Density and specific gravity are both ways of describing the weight (mass) of a certain quantity of material.