Electron Mass (amu)
type: ConstantValue
has unit: http://qudt.org/vocab/unit/U
informative reference: http://physics.nist.gov/cuu/Constants/bibliography.html
standard uncertainty: 0.00000000000023
standard uncertainty SN: 2.3E-13
value: 0.00054857990943
value SN: 5.4857990943E-4
website: http://physics.nist.gov/cgi-bin/cuu/Value#mid