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Contents of the November/December 1998 issue of Quantum 


Feature articles

Sea Waves

by L. A. Ostrovsky

Troughs and crests from head to toe.

Sea wave
Art by Sergey Ivanov

Lattices and Brillouin Zones

by A. B. Goncharov

Geometrical by nature, the study of lattices has its roots in the physics of crystals.


Wave on a Car Tire

by L. Grodko

Does the engine limit the maximum speed of a car?


Functional Equations and Groups

by Y. S. Brodsky and A. K. Slipenko

Solving functional equations using one of the most important concepts of modern mathematics: the group.


Departments

Physics Contest: Warp Speed

by Larry D. Kirkpatrick and Arthur Eisenkraft

What is happening when objects appear to be breaking the universal speed limit, the speed of light?


At the Blackboard I: The Steiner-Lehmus Theorem

by I. F. Sharygin

If two _____ of a triangle are ______ , then the triangle is ______ .


At the Blackboard II: Errors in Geometrical Proofs

by S. L. Tabachnikov

The elusive nature of flaws in geometric reasoning.


At the Blackboard III: Hurling at the Abyss

by A. Stasenko

An errant knight, a pile of stones, a swinging platform, and a lady in waiting.


In the Lab: Why is a Burnt Match Bent?

by V. Mil’man

An exploration of the tendency of matches to curl up by a warm fire.


Looking Back: The Quantum Nature of Light

by D. Sviridov and R. Svirodova

How researchers devised an experiment to observe the discreteness of light with the human eye.


Gradus ad Parnassum: Completing the Square

by Mark Saul and Titu Andreescu

Circumventing a quadratic-equation trap that often ensnares beginning teachers.


Musings: I Can See Clearly Now

by David Arns

A poem.


Cowculations: Contact

by Dr. Mu

Our bovine computer enthusiast taxes his CPU with the task of translating digitized ostrich utterances.


How Do You Figure?: Challenges in Physics and Math


Brainteasers: Just for the Fun of It!

Check out this sample!


Crisscross Science

Scientific crossword puzzle.


Happenings

Bulletin Board.


Answers, Hints & Solutions


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