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abstraction > mathematical concept > unit > mass unit

mass unit
subject			fact

mass unit	is a unit of mass
	is a kind of unit
unit	has historical origin
	represents

Kinds of mass unit :

• atomic mass unit (9 facts) (u, dalton) - The masses of atoms and molecules are generally given in atomic mass units. These units are based on a scale in which the mass of carbon 12 is taken to be 12. Atomic masses were originally given as atomic weights on a scale where the mass of the hydrogen atom was unity, later they were based on oxygen or oxygen 16; these scales have all been replaced by the carbon 12 scale.
• kilogram (6 facts) (kg) - Unit of mass (not of weight or of force). Kilogram is equal to the mass of 1.000028 cubic decimeters of water at the temperature of its maximum density., Unit of mass equal to the international prototype of the kilogram
• solar mass (2 facts) - Unit of mass equal to the amount of mass in the Sun, and the unit in which stellar and galactic masses are expressed.