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.
The phonograph is a device, invented in 1877, for the mechanical recording and reproduction of sound. In its later forms, it is also called a gramophone, or, since the 1940s, a record player. The sound vibration waveforms are recorded as corresponding physical deviations of a spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a record. To recreate the sound, the surface is similarly rotated while a playback stylus traces the groove and