atomic mass unit | has symbol u | ![has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:49.0 has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:49.0](facet.gif) |
has equivalent 1.6605402 × 10-27 kg | ![has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:49.0 has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:49.0](facet.gif) |
has approval agency International Union of Pure and Applied Physics | ![2001-09-27 09:32:49.0 2001-09-27 09:32:49.0](facet.gif) |
has synonym dalton | ![2001-09-27 09:32:49.0 2001-09-27 09:32:49.0](facet.gif) |
has approval date 1960 | ![2001-09-27 09:32:49.0 2001-09-27 09:32:49.0](facet.gif) |
has proposal date 1959 | ![2001-09-27 09:32:49.0 2001-09-27 09:32:49.0](facet.gif) |
is a unit of mass | ![2001-09-27 09:32:49.0 2001-09-27 09:32:49.0](facet.gif) |
has definition 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where the mass of the hydrogen atom was unity, later they were based on oxygen or oxygen 16; these scales have all been replaced by the carbon 12 scale. | ![has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:49.0 has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:49.0](facet.gif) |
is an instance of mass unit | ![2001-09-27 09:32:49.0 2001-09-27 09:32:49.0](facet.gif) |
unit | has historical origin | ![2001-09-27 09:32:42.0 2001-09-27 09:32:42.0](facet.gif) |
represents | ![2001-09-27 09:32:42.0 2001-09-27 09:32:42.0](facet.gif) |