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.
Surnames usually originated from one of the five following sources: (although the same surname may have multiple meanings from different sources in different places). 1  From the first name of father used with either a suffix or prefix (which differ from country to country) to identify the person as son of. 2  Examples:hat does my surname mean?. If you have ever asked this question and wondered about the origin of your last name, you will find your surname may answer one of the questions of where your ancestors lived, or what they did for a living, or what was their personality like, or how they looked many hundreds of years ago.