The harmonic mean is the special case of the power mean and is one of the Pythagorean means. In older literature, it is sometimes called the subcontrary mean. The volume-to-surface area ratio for a cylindrical container with height and radius and the mean curvature of a general surface are related to the harmonic mean.
The name SMITH is probably the most common of all surnames. The only names that give it any competition for this title would be Jones and Johnson. The most widely accepted derivation of the name is from the Anglo-Saxon SMITAN and the Germanic verb âSmioanâ meaning to smite or strike.
[Image: Library of Congress]If you have a Smith in your family, you have a staggering 81 million records to pore through on Ancestry. Smith has long been the most common surname in both the United States and Great Britain. Each U.S. census lists more and more Smiths, from 274,919 in 1850 to 2,376,206 in 2000. Yet the name is far from generic and has a rich and complicated history. 14-Day Free Trial.