Many a schoolboy has burned himself with his father's magnifying glass. If he was a curious schoolboy he probably took the trouble to learn that the glass gathered together the sun's diffused rays and concentrated them on one spot, raising their temperature to the burning point. But even that temperature was far lower than the 6,000ยบ C. on the sun's sizzling surface. Last week Chemist Robert Browning Sosman of U. S. Steel Corp., announced that by extending the principle of the magnifying glass he was able to...
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