Inequality can refer to economic inequality which is the difference in how assets, wealth, or income are distributed among individuals and/or populations. It is also described as the gap between rich and poor, income inequality, wealth disparity, wealth and income differences, or the wealth gap....

This Test Guideline lists methods for determining the density of liquids and solids, giving only a succinct description of them. The density of a substance is the quotient of its mass and its volume and is expressed in SI units as kg/m3 at a specified temperature. Several methods are for liquid...

This Test Guideline lists methods for determining the density of liquids and solids, giving only a very succinct description of them. The density of a substance is the quotient of its mass and its volume and is expressed in kg/m3. Several methods are for liquid substance only: hydrometer,...