Superstring theory
Superstring theory is an attempt to explain all of the particles and fundamental forces of nature in one theory by modelling them as vibrations of tiny supersymmetric strings.
'Superstring theory' is a shorthand for supersymmetric string theory because unlike bosonic string theory, it is the version of string theory that incorporates fermions and supersymmetry.
Since the second superstring revolution, the five superstring theories are regarded as different limits of a single theory tentatively called M-theory, or simply string theory.
Background
The deepest problem in theoretical physics is harmonizing the theory of general relativity, which describes gravitation and applies to large-scale structures (stars, galaxies, super clusters), with quantum mechanics, which describes the other three fundamental forces acting on the atomic scale.
The development of a quantum field theory of a force invariably results in infinite possibilities. Physicists have developed mathematical techniques (renormalization) to eliminate these infinities that work for three of the four fundamental forces—electromagnetic, strong nuclear and weak nuclear forces—but not for gravity. The development of a quantum theory of gravity must therefore come about by different means than those used for the other forces.
Icon
An icon (from Greek εἰκών eikōn "image") is typically a painting depicting Christ, Mary, saints and/or angels, which is venerated among Eastern Orthodox, Oriental Orthodox, and in certain Catholic Churches.
Icons may also be cast in metal, carved in stone, embroidered on cloth, painted on wood, done in mosaic or fresco work, printed on paper or metal, etc. Icons are often illuminated with a candle or jar of oil with a wick. (Beeswax for candles and olive oil for oil lamps are preferred because they burn very cleanly, although other materials are sometimes used.) The illumination of religious images with lamps or candles is an ancient practice pre-dating Christianity.
Although common in translated works from Greek or Russian, in English iconography does not mean icon painting, and "iconographer" does not mean an artist of icons, which are painted or carved, not "written", as they are in those languages.
Comparable images from Western Christianity are generally not described as "icons", although "iconic" may be used to describe a static style of devotional image.
List of ICON science fiction conventions
ICON is the name of at least five science fiction conventions. In order of seniority, these are:
Icon (Vince Gill album)
Icon is a greatest hits album by American country musician Vince Gill. It was released on August 31, 2010 by MCA Nashville, and contains select highlight songs from his career.
Track listing
Critical reception
Stephen Thomas Erlewine, in his review for Allmusic, says the album is "a very good sampler of Vince Gill's biggest hits for MCA Nashville".
Chart performance
References
Podcasts:
