Color Television
Although the Federal Communications Commission has chosen one of the three competing systems, the debate over their relative merits continues
Features
Hibernation
In winter many species of animals curl up and lower their body temperature to conserve their resources. Curiously the bear does not seem to be one of them
Symbolic Logic
It is a language that manipulates ideas as algebra manipulates numbers. It has been applied with notable success to practical problems requiring unusually precise and economical reasoning...
The Big Schmidt
The wide, sharp field of the 48-inch telescope, now engaged in a survey of the entire sky visible from Palomar Mountain, complements the deep but narrow view of the great 200-inch
Group Psychotherapy
Man is a social animal, and his neuroses can often be treated in a social context. One psychotherapist can work with several patients, who at the same time greatly influence one another
Fertilization of the Egg
What happens when the germ cells of animals unite? The answer has partly been given by the useful eggs of sea urchins, which are visibly fertilized in water
Fine Particles
The fertility of the soil, the color of the sky and a multitude of other things depend on bits of matter either barely visible or smaller than the eye can see
The Earth's Heat
Like the fever of a sick man, the temperature of rocks in the crust of our planet is a clue to the processes of its inaccessible interior
Departments
50 and 100 Years Ago: December 1950
Science and the Citizen: December 1950
- Letters
Letters to the Editors, December 1950
- Recommended
Books
- Amateur Scientist
The Amateur Astronomer
- Departments
Annual Index
Bibliography
