Scientific American Magazine Vol 199 Issue 2

Scientific American

Volume 199, Issue 2

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Beryllium and Berylliosis

Extracted from beryl, a crystal which is almost identical with emerald, this light metal has found glamorous applications in modern technology. It is also capable of causing a serious disease

Hot Spots in the Atmosphere of the Sun

Regions in the sun's corona appear to be as much as 1,000 times hotter than its surface. They may be the long-sought connection between sunspots and disturbances in the atmosphere of the earth

Magnetic Resonance

Atomic nuclei and electrons, which spin on their axes like tops, can be tipped over by magnetic fields. The technique furnishes much information about complex molecules and chemical reactions

The Cerebellum

Until recently the function of this part of the brain was unknown. Mapping of its electrical circuits now indicates it may be a monitor of communication between brain and body

Poisonous Tides

The explosive multiplication of certain marine microorganisms can kill fish by the millions. The investigation of these outbreaks is now elucidating some fundamental questions of oceanic ecology

A Universal Molecule of Living Matter

The tetrapyrrole ring, a chemical structure made up of four smaller rings, occurs in the chlorophyll of plants, the hemoglobin of blood and many enzymes which, like hemoglobin, take part in respiration

Celestial Navigation by Birds

A remarkable series of experiments shows that migratory birds navigate by the stars. In a planetarium their flight direction is controlled by the position of the stars in the artificial sky

Repetition and Learning

Is drill necessary in rote learning? The author's experiments indicate that we form mental associations instantly. The role of repetition is to help us retain what we have already learned


Science and the Citizen: August 1958
50 and 100 Years Ago: August 1958
The Authors
Letters to the Editors, August 1958
Amateur Scientist
The Amateur Scientist
Mathematical Recreation
Mathematical Games