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.
Not to be confused with specific gravity. The specific weight (also known as the unit weight) is the weight per unit volume of a material. The symbol of specific weight is Î³ (the Greek letter Gamma). A commonly used value is the specific weight of water on Earth at 5Â°C which is 9.807 kN/m3 or 62.43 lbf/ft3.