The Men and the Mirror
Encyclopedia
"The Men and the Mirror" is a short science fiction
Science fiction
Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 story by author Ross Rocklynne
Ross Rocklynne
Ross Rocklynne was the pen name used by Ross Louis Rocklin, an American science fiction author active in the Golden Age of Science Fiction....

, published in Astounding Science Fiction in July 1938, since reprinted in Rocklynne's collection of the same title (1973) and in Asimov's collection Before the Golden Age
Before the Golden Age
Before the Golden Age: A Science Fiction Anthology of the 1930s is an anthology of 25 science fiction stories from 1930s pulp magazines edited by Isaac Asimov. It was first published in April 1974....

(1974). The story is one of three stories by Rocklynne featuring the protagonist Jack Colbie of the Interplanetary Police and his pursuit of interplanetary criminal Edward Deverel (all three are in his collection The Men and the Mirror).

In the story, Colbie and Deverel inadvertently slip onto the friction
Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and/or material elements sliding against each other. There are several types of friction:...

less surface of an enormous concave mirror
Mirror
A mirror is an object that reflects light or sound in a way that preserves much of its original quality prior to its contact with the mirror. Some mirrors also filter out some wavelengths, while preserving other wavelengths in the reflection...

 built by unknown alien beings, and must use the laws of physics to come up with a way to avoid oscillating in a pendulum motion back and forth across the mirror until eventually the small amounts of friction brings them to a stop in the center. Although the physics of the story can be criticized, the story is a textbook example of the kind of science-fiction called a "science puzzle" story (a variety of gedanken or 'idea' subgenre tale), in which the set up of the story is a puzzle which must be solved using (real) science. Many later examples could be cited, including Hal Clement
Hal Clement
Harry Clement Stubbs better known by the pen name Hal Clement, was an American science fiction writer and a leader of the hard science fiction subgenre.-Biography:...

's story "Dust Rag," and Larry Niven
Larry Niven
Laurence van Cott Niven / ˈlæri ˈnɪvən/ is an American science fiction author. His best-known work is Ringworld , which received Hugo, Locus, Ditmar, and Nebula awards. His work is primarily hard science fiction, using big science concepts and theoretical physics...

's "Neutron Star."

Geoffrey A. Landis
Geoffrey A. Landis
Geoffrey A. Landis is an American scientist, working for the National Aeronautics and Space Administration on planetary exploration, interstellar propulsion, solar power and photovoltaics...

 published a story in the January/February 2008 issue of Analog Science Fiction and Fact
Analog Science Fiction and Fact
Analog Science Fiction and Fact is an American science fiction magazine. As of 2011, it is the longest running continuously published magazine of that genre...

(formerly Astounding Science Fiction) called "The Man in the Mirror," which is also a science puzzle story about a frictionless concave mirror, only this time there is only one man, and the physics are more valid. The story was dedicated to Rocklynne.
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