The Evolution of the Physicist's Picture of Nature
An account of how physical theory has developed in the past and how, in the light of this development, it can perhaps be expected to develop in the future
Features
Moiré Patterns
They are produced when figures with periodic rulings are made to overlap. A study of their basic properties reveals that they can illuminate many problems of scientific interest
The Lysosome
This small particle acts as the digestive tract of the living cell. Its enzymes dissolve the substances ingested by the cell and under certain circumstances can dissolve the cell itself
Radiation Belts
It has been five years since these rings of trapped particles were discovered. Presenting a review of present knowledge of the belts, with special reference to particles injected by nuclear explosions
Pheromones
A pheromone is a substance secreted by an animal that influences the behavior of other animals of the same species. Recent studies indicate that such chemical communication is surprisingly common
Early Man in the Andes
A rich assemblage of obsidian tools has been discovered at El Inga, high in the mountains of Ecuador. It may provide a Long-sought link between the prehistoric men of the U.S. and those of South America
The Measurement of Motivation
A basic human attribute that has long resisted investigation can now be measured with the help of a simple device. The key to the measured with is what happens when the subject is given a short rest
The Cultivation of Tilapia
This prolific fish has been introduced into many less developed areas as a cheap source of protein-rich human food. A new method for making it grow larger in ponds may enhance its usefulness
Departments
50 and 100 Years Ago: May 1963
Science and the Citizen: May 1963
- Letters
Letters to the Editors, May 1963
- Recommended
Books
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Bibliography