Contents of the May/June 1997 issue of Quantum
by E. B. Vinberg
A look at kaleidoscopes that takes you well beyond the simple tubular toyinto hyperbolic space, in fact!
Does Elementary Length Exist?
by Andrey Sakharov
The great Soviet physicist and human rights activist discusses one of the basic questions in the field of particle physics: is there, in principle, a limitation on the applicability of modern sciences basic ideas about space and causality?
Irrationality and Irreducibility
by V. A. Oleynikov
The ancient Greeks knew that the square root of 2 is irrational. Later it became clear that the polynomial x2 2 = 0 is irreducible. Whats the connection?
A Clock Wound for All Time
by V. I. Kuznetsov
The Earth is a timepiece that can measure its own agealmost!
Kaleidoscope: Lets Not Be Dense About It!
by A. A. Leonovich
It here is the concept of density. How well do you understand it?
Physics Contest: Color Creation
by Arthur Eisenkraft and Larry D. Kirkpatrick
How thin film interference affects how colors are created in soap bubbles and oil slicks, and how they differ from those produced by a prism or raindrop.
Cowculations: Slipping Silage
by Dr. Mu
Someone was stealing the hay. He was caught, but the insurance company wants to know how much was stolen. Can you help figure it out?
At the Blackboard I: Magnets, Charges, and Planets
by Albert Stasenko
Investigating an analogy between magnetism and gravity.
Toy Store: Rubik Art
Huge patterned cubes formed from many Rubiks Cubesa pastime of physicist Hana Bizek of Argonne National Laboratory.
At the Blackboard II: Adding Angles in Three Dimensions
by A. Shirshov and A. Nikitin
Taking a theorem for plane figures into the realm of polyhedrons.
At the Blackboard III: Fair and Squared!
by Boris Korsunsky
What to do when a physics problem has been reduced to a math problem involving a quadratic equation.
Math Investigations: Farewell to JCMN
by George Berzsenyi
A fond look at the James Cook Mathematical Notes and its creator, Basil Rennie.
How Do You Figure?: Challenges in Physics and Math
Brainteasers: Just for the Fun of It!
The Quantum Bulletin Board.
Scientific crossword puzzle.
Answers, Hints & Solutions
Copyright © 1997 National
Science Teachers Association