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Contents of the July/August 1998 issue of Quantum


Feature articles

Hydroparadoxes

by S. Betayev

Fluids don’t always behave as expected. Therefore, you should be aware of these notable surprises in hydrodynamics.

Hydroparadoxes
Art by V. Ivanyuk

Van der Waerden’s Pathological Function

by B. Martynov

Not for readers with weak stomachs, this article looks at a type of function that Charles Hermite referred to as a “miserable sore.”


Planetary Building Blocks

by V. Mescheryakov

Examining the forces involved in the accretion of planetary mass, or more simply, how Earth was formed.


So, What’s Wrong?

by I. F. Sharygin

A collection of questionable answers that requires readers to ferret out the errors in logic.


Departments

Looking Back: The Legacy of al-Khwarizmi

by Z. D. Usmanov and I. Hodjiev

The words algebra and algorithm are familiar to readers of Quantum, but do you know their origins?


Kaleidoscope: Triangles with the Right Stuff

by L. D. Kurlyandchik

Interesting results from a not-so-special case of right triangles.


Physics Contest: Doppler Beats

by Larry D. Kirkpatrick and Arthur Eisenkraft

What the wail of a siren can tell you about its motion relative to you.


At the Blackboard I: Weightlessness in a Car?

by Sergei Pikin

Can an automobile passenger achieve a momentary state of weightlessness when hitting a rise in the road?


At the Blackboard II: Rivers, Typhoons, and Molecules

by Albert Stasenko

What do these things have in common?


Gradus ad Parnassum: Symmetry in Algebra, Part III

by Mark Saul and Titu Andreescu

Factoring polynomials: back to basics.


At the Blackboard III: Ordered Sets

by L. Pinter and I. Khegedysh

Ordered triplets, some generalizations, and remarkable inequalities.


Musings: How Big Am I, Really?

by David Arns

A poem.


Cowculations: Barn Again

by Dr. Mu

Help Dr. Mu move the Dougan Round Barn.


In the Lab: Suds Studies

by N. Paravyan

Experimenting with soap film and bubbles.


How Do You Figure?: Challenges in Physics and Math


Brainteasers: Just for the Fun of It!

Check out this sample!


Crisscross Science

Bonus BIG scientific crossword puzzle.


Feedback

Thoughts from our readers.


Happenings

Bulletin Board.


Answers, Hints & Solutions


Index of Articles, Volume 8


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