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.
â Homes of Family Names in Great Britain (1890) by Henry Brougham Guppy. Smith is an occupational surname - the smith - common to every village in England, north, south, east and west. The name Smyth is the almost invariable spelling in early rolls, so that it cannot exactly be styled a modern affection. There are 300,000 Smiths in England (1901); very different from the state of Israel, when there was no smith found throughout all the land of Israel.