Value for electron charge to mass quotient
type: ConstantValue
has unit: C-PER-KiloGM
informative reference: http://physics.nist.gov/cuu/Constants/bibliography.html
standard uncertainty: 4400.0
standard uncertainty SN: 4.4E3
value: -175882015000.0
value SN: -1.75882015E11
website: http://physics.nist.gov/cgi-bin/cuu/Value#mid