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Lecture Demonstration

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"Lecture Demonstration"
Short story by Hal Clement
CountryUnited States
LanguageEnglish
GenreScience fiction
Publication
Published inAstounding: The John W Campbell Memorial Anthology
Publication typeAnthology
Media typePrint (Hardcover)
Publication date1973

"Lecture Demonstration" is a science fiction short story by American writer Hal Clement. It was first published in Astounding: The John W Campbell Memorial Anthology in 1973.[1][2] The story is set on the planet Mesklin introduced in the author's novel Mission of Gravity, but in the equatorial region during an earlier period when the college is still being set up by humans.[1][3] In the story, a Terrestrial teacher and his Mesklinite students encounter a life-and-death puzzle which they solve using principles of geology and chemistry.[1]

Plot summary

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Dr LaVerne, a teacher with the( college, takes a party of Mesklinite students on a geological expedition. Whilst examining a layer of rock, it collapses. LaVerne and the students fall into a cavern. They are unable to climb out; the limiting factor is time, as the teacher is enclosed in a suit with a finite oxygen supply.

The students and teacher discuss various possibilities until they realise that they can raise the melting point of the surrounding ammonia 'snow' to the point where it solidifies. They climb out to safety.

Reception

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IN 1974, science fiction writer P. Schuyler Miller referred to Hal Clement's short story "Lecture Demonstration" as a "hard-science problem story set on Mesklin".[4]

A 2003 review in Strange Horizons said that "Lecture Demonstration" "begins to resemble a sort of 'minute mystery' conceit that invites the reader to engage in pocket scientific sleuthery at the expense of narrative storytelling".[5]

Collections

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"Lecture Demonstration" appears in:[6][3][5]

References

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  1. 1 2 3 Hassler, Donald M. (1982). "The Irony in Hal Clement's Word Building". In Wolfe, Gary (ed.). Science fiction dialogues. Academy Chicago. pp. 87, 90. ISBN 0897330676.
  2. Harrison, Harry, ed. (1973). "Lecture Demonstration". Astounding; John W. Campbell memorial anthology. New York: Random House. pp. 73–90.
  3. 1 2 Clement, Hal (2002). Heavy planet : the classic Mesklin stories. New York: TOR. pp. 208–221. ISBN 9780739432914.
  4. Westfahl, Gary (1996). Cosmic engineers : a study of hard science fiction. Greenwood Press. pp. 12–13. ISBN 0313297274.
  5. 1 2 Chaw, Walter (9 June 2003). "Foundations: Hal Clement's Heavy Planet and A.E. Van Vogt's The World of Null-A". Strange Horizons. Retrieved 2026-08-08.
  6. Sandercombe, W. Fraser (2010). Masters of SF : the Science Fiction Hall of Fame. Burlington, Ontario: Collector's Guide Pub. p. 95. ISBN 9781897350287.