Contents of the July/August 1996 issue of Quantum
A Venusian Mystery
by Vladimir Surdin
Funny thing about Venusit doesnt rotate in the same direction as, say, Earth or Mars. It rotates backwards. And scientists still havent quite figured out why.
by Lev Kurlyandchik and Grigory Rozenblume
A brief display of the power of this technique (a close relative of mathematical induction).
The Power of the Sun and You
by V. Lange and T. Lange
We all know that the Sun puts out a lot of power. But when it comes to power per unit mass, who winsour local star or our Quantum reader?
Spinning Gold from Straw
by S. Artyomov, Y. Gimatov, and V. Fyodorov
Mathematical logic turns two secrets into one certainty. A mathematician tells one colleague the sum of two numbers, another colleague the product of the same two numbers. How did the colleagues manage to discover the numbers after the seemingly pointless conversation recorded in the article?
Kaleidoscope: Whats the Best Answer?
Problems where you dont just want to get the right answer, but the one with the witty twist.
At the Blackboard: While the Water Evaporates
by Mikhail Anfimov and Alexey Chernoutsan
An attempt to calculate the rate of evaporation on the basis of a thought experiment.
Math Investigations: Finding the Family Resemblance
by George Berzsenyi
A call for help in categorizing so-called integer representation problems.
Physics Contest: Boing, Boing, Boing
by Arthur Eisenkraft and Larry D. Kirkpatrick
What happens to a bouncing ball after the second bounce on an inclined plane, and the third, and the fourth . . .
Follow-up: Dragon the Omnipresent
Another look at the dragon curves (creatures found by Chandler and Knuth) introduced to Quantum readers in the September/October 1995 issue.
In the Lab: Osmosis the Magnificent
by Norayr Paravyan
A home-made osmometer and a question of strengthand endurance.
Toy Store: The World Puzzle Championship
by Vladimir Dubrovsky
A report on the 1995 convocation in Romania and problems from Brno (1993) and Brasov (1995).
How Do You Figure?: Challenges in Physics and Math
Brainteasers: Just for the Fun of It!
Scientific crossword puzzle.
Answers, Hints & Solutions
Copyright © 1996 National
Science Teachers Association