 FACTOID # 17: Though Rhode Island is the smallest state in total area, it has the longest official name: The State of Rhode Island and Providence Plantations.

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Encyclopedia > Specific weight

The specific weight of a structure or material is the weight required to carry out a particular task, e.g.: the weight of a structure designed to carry certain loads while remaining intact and remaining within limits regarding deformation. In engineering mechanics, deformation is a change in shape due to an applied force. ...

Specific weight is also force due to gravity (weight) divided by volume. Another form is the acceleration of gravity times the density. In physics, a force is an external cause responsible for any change of a physical system. ... It has been suggested that gravitation be merged into this article or section. ... In the physical sciences, weight is the downward force exerted on matter as a result of gravity. ... Volume, also called capacity, is a quantification of how much space an object occupies. ... Acceleration is the time rate of change of velocity, and at any point on a v-t graph, it is given by the gradient of the tangent to that point In physics, acceleration (symbol: a) is defined as the rate of change (or time derivative) of velocity. ... It has been suggested that gravitation be merged into this article or section. ... Density (symbol: Ï - Greek: rho) is a measure of mass per unit of volume. ...

The terms specific gravity, and less often specific weight, are also used for relative density. Relative density (also known as specific gravity) is a measure of the density of a material. ... Results from FactBites:

 BT - Understanding Specific Gravity and Extract (2204 words) Specific gravity is the density (weight per unit volume) of a substance divided by the density of water. The specific gravity of liquids is often measured with a hydrometer, whose weight (a constant) displaces different volumes of liquid as the liquid's density varies. Relationship between extract potential by weight and specific gravity: For a unit weight of raw material, the weight of extract in a unit volume of solution (equation 6) must be equal to the unit weight times the extract potential by weight.
 Encyclopedia: Specific weight (444 words) Specific gravity is the density (weight per unit volume) of a substance divided by the density of water. The specific gravity of liquids is often measured with a hydrometer, whose weight (a constant) displaces different volumes of liquid as the liquid's density varies. Change in specific gravity with dilution or evaporation: As the volume of a wort is increased by dilution or decreased by evaporation, the weight of extract within it remains constant.
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