Experiments in Hurricane Modification
By "seeding" a cluster of clouds near the center of a hurricane with silver iodide crystals it may be possible to trigger a self-sustaining chain of events leading to a reduction in the storm's wind speed...
Features
The Geology of the Moon
With the technique of stratigraphy the geologist can ascertain the relative age of lunar features. The resulting interpretation of the moon's surface is supported by the Ranger pictures...
Three-Pigment Color Vision
Direct measurements of the absorption of light by individual cells show that color is discriminated in vertebrate retinas by three pigments segregated in three kinds of cone receptor
Protein-Digesting Enzymes
These enzymes, which are themselves proteins, play an essential role in the process provides clues of digestion. The study of their molecular structure as to how all enzymes produce their catalytic effects...
Fluid Control Devices
They perform the operations of amplification and switching mechanically rather than electrically. For some purposes they are more reliable than their electronic counterparts
The Hopewell Cult
A 1,500-year-old rubbish heap unearthed in southern Ohio holds the answers to some key questions about the ancient Indians who lived there and built huge funeral mounds filled with offerings...
How Cells Make Antibodies
The process has now been clarified by experiments with single antibody-producing cells grown in culture. These experiments indicate that antibody manufacture is directed by the genes
Quantized Vortex Rings in Superfluid Helium
Vortex rings analogous to smoke rings in air can be produced in liquid helium. They move in strange ways and exhibit discrete quantum effects on a large scale
Departments
50 and 100 Years Ago: December 1964
Science and the Citizen: December 1964
- Letters
Letters to the Editors, December 1964
- Recommended
Books
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Annual Index
Bibliography
