Information at the foundation of modern science and technology from the Physics Laboratory of NIST

		CODATA Internationally recommended values of the

The paper describing in detail the CODATA 2006 least-squares adjustment of the values of the constants has been published simultaneously in two journals and is available to readers electronically: P. J. Mohr, B. N. Taylor, and D. B. Newell, Rev. Mod. Phys 80(2), 633-730(2008) P. J. Mohr, B. N. Taylor, and D. B. Newell, J. Phys. Chem. Ref. Data 37(3), 1187-1284(2008)

NIST Standard Reference Database 121 Online: October 1994   -   Last update: August 2008