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Contents of the March/April 2000 issue of Quantum

Feature articles

Geometry of Sliding Vectors by Y. Solovyov and A. Sosinsky "The Swan is heaven bound, the Crayfish pulls backward, the Pike moves upstream."--I. A. Krylov
	Art by Jose Garcia

Mathematics: 1900-1950

by V. Tikhomirov

An overview of the first half of the 20th century.

A Star is Born

by V. Surdin

Gravity backs a stellar production.

Principles of Vortex Theory

by N. Zhukovsky

Inside the hydrodynamics of Helmholtz.

Departments

Physics Contest: Magnetic Vee

by Larry D. Kirkpatrick and Arthur Eisenkraft

Kaleidoscope: About the Triangle

At the Blackboard I: An Olympian Effort

by V. Tikhomirov

Looking Back: Experiments of Frank and Hertz

by A. Levashov

At the Blackboard II: Inequalities Become Equalities

by A. Egorov

In the Open Air: A Watery View and Waterloo

by A. Stasenko

At the Blackboard III: An Old Algorithm

by Y. Solovyov

Poem: The Death of a Star

by David Arns

In the Lab: Boiling Liquid

by A. Borovoi

Informatics: Langton's Ant

by Don Piele

How Do You Figure?: Challenges in Physics and Math

Brainteasers: Just for the Fun of It!

Crisscross Science

Answers, Hints & Solutions

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