Constants Topics: Values Energy Equivalents Searchable Bibliography Background Constants Bibliography Constants, Units & Uncertainty home page	Article on 2014 Adjustment Detailed description of the 2014 adjustment, including the covariance matrix of selected constants: P. J. Mohr, D. B. Newell, and B. N. Taylor, Rev. Mod. Phys. 88, 035009, 73 pages (2016) P. J. Mohr, D. B. Newell, and B. N. Taylor, J. Phys. Chem. Ref. Data 45, 043102, 74 pages (2016)    Return to Latest (2018) values of the constants.