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 SI unit for the specific weight is N/m 3 while the English unit is lb/ft 3. Specific gravity is simply the ratio of the specific weight of a given liquid to the specific weight of water at 4Â° C (Î³ water = 9.81 kN/m 3 or 62.4 lb/ft 3). This definition is helpful when comparing densities of different liquids.