This second edition of Mass Metrology: The Newly Defined Kilogram has been thoroughly revised to reflect the recent redefinition of the kilogram in terms of Pla

"How much does it weigh?" seems a simple question. To scientists and engineers, however, the answer is far from simple, and determining the answer demands consi

One of the exciting characteristics of metrology is its intimate relationship between fundamental physics and the leading edge of technology which is needed to

Over the last decade of the 20th century, many improvements took place in the field of metrology and fundamental constants. These developments and improvements