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 (SG), defined as Ï milk /Ï water, is identified in a similar way, for example, SG2020 or SG420, where the superscript is the temperature at which the milk density was measured, and the subscript the temperature at which the density of water was determined.