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Tag "science news"
SCIENCE NEWS of the MONTH (Feb, 1936)

What is down hill to a continent?

SCIENCE NEWS of the MONTH

Continents Have Stopped Sliding Down Hill
• THE migration of continents, which some geologists think a continual process, while others deny it, is suggested by George W. Munro, of Purdue University, in a letter to Science, to have been an actual occurrence; but one which has happened only twice in two billions years of the earth’s history, when sufficient heat was developed near the surface to start continental masses moving under pressure. He suggests that the American continent hit a snag, which broke its backbone.

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SCIENCE NEWS of the MONTH (Feb, 1935)

SCIENCE NEWS of the MONTH

Metallic Sandwich Analyzed by X-rays
• BY holding up a layer of thin strips of different metals to X-ray radiation, a Swedish chemist, Dr. Hamos, can identify each of those in the pile by its characteristic “secondary radiation,” or rays shot out under the influence of X-ray bombardment. The secondary rays are then analyzed with an ultra-violet spectroscope; and each metal gives a different line when photographed. By this means, ore specimens can be analyzed without dissolving them in chemicals.

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