Density

From ArticleWorld

Density is defined as being a measurement of mass in connection with volume. It is represented by the Greek symbol rho (“ρ”) and the formula given for calculations is ρ = m/V. “m” is the object’s total mass (in kilograms) and “V” (in cubic meters) represents the total volume. Density is affected by several chemical or physical elements and can be different for the same object in different circumstances. The most common device for measuring fluid density is the pycnometer and the gas pycnometer is used for measuring densities of solid objects.

Other units

The unit defined to characterize density in the SI base unit is kilograms per cubic meter (kg/m³). One may use different units based on the needed amount. For instance, commonly used is grams per cubic centimeter and mega gram per litre. In the United States of America, because of different base units for mass and volume, the SI base units recognized will include pounds per cubic foot, pounds per cubic inch, ounces per cubic inch, pounds per cubic yard and pounds per gallon. Some calculations will also use slugs per cubic foot. Other units can be seen in different areas of work. The period between 1901 and 1964 saw a definition of the litre being given in link with density. 1 litre was considered to be a volume of 1 kg. of water at maximum density.