Word: founding
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Dates: during 1940-1949
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Individuals vary widely, Dr. Peckham found, but on an average, sensitivity to light at night is reduced by more than one-third after a day at the beach without sunglasses; in some cases it is reduced by nine-tenths. The loss in sensitivity cuts down night vision in a "logarithmic proportion": the average driver loses 13% of his visual acuity, the extreme case loses...
...past, doctors have disagreed as to how long vision is impaired by the sun's glare. Dr. Peckham found from his studies with lifeguards that much of the effect wears off overnight, but in most people some effect persists for two or three days, and in some cases it continues for more than a week...
...Nation last week found itself with an issue dear to its professionally liberal heart: freedom of opinion. And, as usual, it made the most of it. In its own pages, the Nation, in effect, charged that the Saturday Review of Literature was suppressing free opinion. The suppression: the S.R.L.'s refusal to print a letter, signed by 84 poets, critics and others, criticizing two articles the S.R.L. had printed last June about Poet Ezra Pound and the Bollingen Prize (TIME, Aug. 29). The Nation itself printed the letter last week, alongside an article accusing the S.R.L. of everything from...
When silt sinks slowly to the bottom of an ocean or lake, the magnetic particles in it line up with the earth's magnetic field like tiny compass needles. When the silt hardens into rock, the magnetic particles are "frozen" so that they cannot move. The Carnegie scientists found that even when the rock layer is folded by geological forces, the magnetic particles keep their alignment, pointing accurately around the curves of the folds. Even in layers known to be 200 million years old, the rock keeps its magnetism...
...when the geologists examined rocks from Maryland more than 350 million years old, they found that their magnetism pointed in an entirely different direction. The south-seeking ends of the magnetic particles were pointing downward as the needles of "dip circle" compasses do in the southern hemisphere. The ancient Maryland rocks acted magnetically as if they had been formed nearer to the southern magnetic pole (in Antarctica) than to the northern one (in Canada...