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.
Surname means âthe name that a person has in common with other family members, as distinguished from a Christian name or given name; family name.â Sur is a French root meaning âabove.â. The surname Smith is derived from smithing or blacksmithing, âa person who forges objects of iron.â The ancestor root of Smith means simply âcut or strike.â.