Word: cm
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...solution inside the lower eyelid of his subjects, and another drop on a light scratch made on the arm with a hypodermic needle. If within 20 minutes the eye did not become red, itchy or swollen, and if the inflamed area on the arm was no more than 1 cm. in diameter, it was considered safe to give the subject a full shot of the antibiotic. Only one man had a mild unfavorable reaction to the test itself; of more than 1,300 others, 25 gave a danger-signal reaction. One of these, a soldier suspecting venereal disease, ignored...
...being freeze-dried (by a half-dozen methods), an attendant made fresh entries on a wall board in Dr. Hyatt's office, to expand the bank's current inventory to: 33 cortical strips, eight infant long bones, four straight pieces of chest artery, 39,354 sq. cm. of skin. The tissue bank will not take material from victims of infectious disease or cancer, has to rely mainly on victims of heart attacks and accidents. In five years it has taken material from 104 individuals, benefited about 1,000 patients of 150 military and civilian surgeons across...
Last week, in cloudy New England, Harvard University dedicated a new radio telescope at the Agassiz Station of the Harvard Observatory, 25 miles west of Cambridge. The telescope's 60-ft. "dish" antenna is steerable (it points anywhere) and is specially designed to pick up 21-cm. radio waves from the great clouds of hydrogen that clutter the universe...
...cm. waves were first observed at Harvard five years ago by Drs. Harold I. Ewen and Edward M. Purcell, and they have proved wonderfully useful in showing up features of the universe invisible to telescopes using light. The hydrogen clouds are everywhere, streaming along the spiral arms of the galaxy, clustered thickly in the Milky Way. An average cloud may be 25 light years (150 trillion miles) in diameter and weigh 100 times as much...
...hydrogen clouds are moving, as they generally are, the radio waves that come from them are slightly longer or shorter than the standard 21 cm. This difference allows radio astronomers to measure the speed of the clouds. It also allows them to "see through" a cloud that is hiding more interesting clouds. All they have to do is to set their detecting apparatus to ignore the waves from the obscuring cloud and tune in the waves from the clouds behind it. Harvard's new telescope will be particularly adapted to this selecting process. It will also have sharper vision...