Lecture Demonstration

"Lecture Demonstration"
Author	Hal Clement
Country	United States
Language	English
Genre(s)	Science fiction
Published in	Astounding: The John W Campbell Memorial Anthology
Publication type	Anthology
Media type	Print (Hardcover)
Publication date	1973

"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.

Plot introduction

The story is laid on the planet Mesklin as used in the author's novel Mission of Gravity, but set in an earlier period when the College established by the Terrestrials is still being set up and the teachers as well as the students are still learning.

Plot summary

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. Teacher and 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.

gollark: Well, this way is much more flexible and requires less work for me.

gollark: I can start signing the messages or something, but you know, performance penalty.

gollark: Skynet itself is a mEXT-like event relay.

gollark: If you actually *need* sender verification, that's out of scope and go stick some public key cryptography on your own relay.

gollark: Not really.

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