Praxis effect
The Praxis effect (also known as the Praxis explosion or Praxis ring) is a special effect sometimes used in science fiction films and other visual media. The effect is most commonly seen following the explosion of a large object in space—a ring or disc of matter or energy expanding out from the destroyed object. It is named after the explosion of the fictional Klingon moon Praxis at the start of the 1991 science fiction film Star Trek VI: The Undiscovered Country.
History[edit]
The first acknowledged use of the effect was in the 1991 science fiction film Star Trek VI: The Undiscovered Country. The over-mined Klingon moon of Praxis (after which the effect was named) explodes and throws a ring-like shock wave through space, precipitating the events of the film.[1]
Physics[edit]
Astronomer Philip Plait has described the explosion and resultant shock wave as "the most dramatic effect ever filmed", but states that in reality it would be more likely for the explosion seen in Star Trek VI: The Undiscovered Country to generate a spherical shock wave. He finds the effect to be more plausible when appearing in the Special Edition of Star Wars Episode IV: A New Hope during the explosion of the first Death Star, as an explosion traveling from the core of the space station would reach the equatorial trench before the surface of the station and find no resistance at this point.[1]
References[edit]
- ↑ 1.0 1.1 Plait, Philip (2002). Bad Astronomy: Misconceptions and Misuses Revealed, From Astrology to the Moon Landing "Hoax" (Google Books). New York: Wiley. p. 254. ISBN 0-471-40976-6. OCLC 48885221. Search this book on
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