This 2:1 ratio defines the octave. The second tone, which is the octave of the first tone, is created by faster vibrations and generates a higher pitch than the one vibrating at 440 cycles per second. The two tones in an octave sound very similar.
More info about the name Zahara. Zahara originates in Hebrew language and means radiance. It is a feminine form of Zohar. Some sources also suggest the Arabic origin and the meaning shining. The name is rather rare in English-speaking countries.
Samara is most likely a corruption of Samaria, a Biblical place name which was once the capital of the Kingdom of Israel in the Old Testament starting in the 9th century B.C. (1 Kings 16:24) â[King Omri] bought the hill of Samaria from Shemer for two talents of silver, and he fortified the hill and called the name of the city that he built Samaria, ...