The noun VIRGO has 3 senses: 1. (astrology) a person who is born while the sun is in Virgo. 2. a large zodiacal constellation on the equator; between Leo and Libra. 3. the sixth sign of the zodiac; the sun is in this sign from about August 23 to September 22. Familiarity information: VIRGO used as a noun is uncommon. Dictionary entry details.
A phonon is a quantum of energy of the independent oscillators in the ensemble. ... All Answers (12) phonons are a way to describe the vibrational degrees of freedom in periodic structures (lattices): the vibrational motions can be modelled as harmonic oscillators, so they can be quantized nearly in the same way.
In geometry, a nonagon / Ë n É n É É¡ É n / (or enneagon / Ë É n iË É É¡ É n /) is a nine-sided polygon or 9-gon. The name nonagon is a prefix hybrid formation, from Latin (nonus, ninth + gonon), used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century.