Astronomy   View all facts   Glossary   Help

abstraction > mathematical concept > unit > mass unit

mass unit comparison table

Subject	has equivalent	is an acronym for	has proposal date	has definition	has historical origin	has symbol	has approval agency	has synonym	has approval date	is an instance of
atomic mass unit	1.6605402 × 10-27 kg		1959	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where the mass of the hydrogen atom was unity, later they were based on oxygen or oxygen 16; these scales have all been replaced by the carbon 12 scale.		u	International Union of Pure and Applied Physics	dalton	1960	mass unit
kilogram		Syteme Internationale		Unit of mass equal to the international prototype of the kilogram	at the end of the 18th century, a kilogram was the mass of a cubic decimeter of water	kg				base SI unit
solar mass				Unit of mass equal to the amount of mass in the Sun, and the unit in which stellar and galactic masses are expressed.						mass unit

Next unit: natural unit    Up: unit    Previous unit: luminous intensity unit